# Hidden features of Stack Exchange?

What are some features of this site that you consider "hidden"?

For example, I didn't know about the RSS feeds until Jeff Atwood and Joel Spolsky discussed them on the podcast.

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## migrated from stackoverflow.comJul 22 '09 at 19:05

This question came from our site for professional and enthusiast programmers.

rly, you didn't notice the RSS icon in your address bar? –  Chris Marasti-Georg Oct 7 '08 at 19:01
Chrome doesn't give the RSS icon on the address bar. –  Lakshman Prasad Jun 17 '09 at 4:25
Until you mentioned it, I never noticed an RSS icon in my address bar ever. sigh –  Dan Neely Oct 12 '09 at 21:13
–  Arjan Feb 5 '11 at 12:01
@Chris - I know I didn't, until just now. On my screen there's probably about 70 icons ATM, and I probably use between 5 and 10 on a regular basis. The address bar isn't used in my browser very often because of these things called "bookmarks". If I ever noticed that icon before, I assumed it was some kind of Firefox gimmick for working with addresses and ignored it. –  Steve314 May 22 '11 at 23:38

You can determine the total number of active users by looking at how many people have the "Teacher" badge (posted at least one upvoted answer):

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Is that right? I interpret the badge description as just users who posted at least one answer that was voted up, which should be number less or equal to the total number of users that posted at least one answer. Right? –  peSHIr Jan 15 '09 at 14:22

While I answered this question in Stack Overflow: How does the Stack Overflow Search Input work?

I found this hidden feature: If you type your search expression than clicking Ctrl + Enter it will open a new tab\window with the results for your search expression.

For some browsers you will need to allow popups in the site to make it work.

For the sake of completeness The keydown (javascript - jQuery)code looks like this:

function(c) {
if (13 == c.which && c.ctrlKey && d.val())
return window.open("/search?q=" + encodeURIComponent(d.val()), "_newtab"), !1
}​

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@amanaPlanaCAnalPAnaMA. ummmm. Nope. try it at google. You can see they wrote code to make it work. –  user173320 Jun 21 '12 at 19:03

View other users' privileges page by visiting /help/privileges/user/<id> URL. This page is accessible without any restrictions which seems to be by design.

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@hims056 too many hidden features already exposed, tough to find any more without the help of mods :) –  Aziz Shaikh Jul 10 '13 at 9:20

It's not a very hidden feature that, on Stack Overflow, the HTML <title> of each question page will have the most popular tag prepended.

What is hidden is that if the person names the question with the tag anywhere in the title:

[Java] How do I do this thing

or

How do I do this thing in Java

It will not also prepend java - at the beginning of the HTML title!

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Associating your Stack Overflow login with another Stack Exchange site gives you +100 free reputation, just like that. I only just discovered this when I decided to set up a leatherworking site on Area 51, but there's nothing I can find about it in the FAQ or elsewhere. I think they wanted to make sure people weren't motivated just by the reputation, but here I go letting the cat out of the bag. :)

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It is mentioned in How does “Reputation” work? and on the blog, Cross-Site Account Associations. And the keyword is bonus. –  Arjan Jan 31 '11 at 17:26

Comment short links are now available: http://[site]/posts/comments/[id]

To obtain comment id you can extract it from the full comment link or use dev tools to inspect the HTML.

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Quick access to see user's review stats: daily, weekly, monthly and total, plus last time he/she reviewed.

URL format is: http://stackoverflow.com/review/user-info/[review queue ID]/[user ID]

Review queue ID list:

1. Suggested Edits
3. Low Quality Posts
4. First Posts
7. ? (future use, or maybe available on specific non SO sites only)
9. ? (future use, or maybe available on specific non SO sites only)

Some examples, using Geoff as model:

This is just raw data, unformatted and of course can be changed or taken down at any point.

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Edit [Jun 2009]: This feature is apparently no longer supported, or the format has changed. Sorry.

You can get a list of all of the questions and answers for which you've gained or lost reputation (along with the points up or down) in JSON format by pointing your browser at:

http://stackoverflow.com/users/###/0/9999999999999


Substitute your user number for the ### in the URL. The 0 and 9999999999999 are the starting and ending times for the report in milliseconds (so this goes from time zero to several hundred years).

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it doesn't work for me –  Carson Myers Jun 10 '09 at 19:32
But: there's a personal reputation report now. –  Arjan May 22 '10 at 11:50

If you click on a question that was migrated, it takes you to the question on the site of migration. If you then click on the "migrated from blahblahblah.com" it will then take you back to the question stub on the first site.

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You can get raw view of post comments (either question or answer) by typing such URL:

http://meta.stackexchange.com/posts/[post id]/comments


Working on all sites of course.

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Shows recently upvoted answers from new users or users with low rep.

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Not hidden anymore.. –  Shadow Wizard Jun 2 '13 at 11:02

If you hover a username in the comments section of a question you get to see his (or her) reputation.

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On per-site-metas, there is a tab for showing users by participation. According to the tooltip it shows: Users most active in the last 60 days (combined number of posts, votes, comments and edits).

The URL for this tab is http://meta.[site].stackexchange.com/users?tab=participation.

The main site does not have such a tab. But simply by removing the meta. part from the above URL, changing it to http://[site].stackexchange.com/users?tab=participation you get another list of users. Although it does not seem to be documented anywhere, it is quite probable that it orders users by activity on the main.

It works even for Meta Stack Overflow Meta Stack Exchange (which, as it is not a per-site-meta, does have reputation tab and not participation tab in the list of users): http://meta.stackexchange.com/users?tab=participation.

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Shortcut to the Advanced Search Options

Just search for an empty (or 1 character length) query and you will see the page.

Note: it is not recommended to link to this URL, use it for personal use only as this method of accessing might disappear in the future leaving a bunch of broken links.

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You can run queries against the database for any Stack Exchange site with the Stack Exchange Data Explorer.

Query for Most Common Comments on Stack Overflow.

*Although now I know it exists. I've found the link in the footer.

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So its not really hidden then :P –  Lix Apr 5 '13 at 10:07
It's hiding behind a curtain but it's feet are still showing. –  Amicable Apr 5 '13 at 10:11

You can browse directly to answers you have downvoted using a hidden feature of the stackoverflow.com/questions page if you have the answer's unique ID (available on the Reputation Calculator page).

(NOTE: Why you would do this anymore given that the answers are now hyperlinked directly from the Reputation tab is questionable, but it still works anyway.)

1. Browse to the Reputation Calculator and locate a line representing an answer vote.

They look like:

3 XXXXXX (-1)

where XXXXXX is the answer's unique identifier.

2. Browse to http://stackoverflow.com/questions/XXXXXX where XXXXXX is that answer identifier.

3. You will be redirected to another URL in the format http://stackoverflow.com/questions/YYYYYY/name-of-the-question-here/XXXXXX#XXXXXX

...which is a link to the answer that you downvoted on the question YYYYYY. That URL you've been directed to is also the one you'll see if you hover over the "link" hyperlink on the answer that you downvoted.

(This actually works for any answer as long as you know the id XXXXXX, not just ones that you've downvoted.)

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@danny It would be more appropriate to post your alternative method as a separate answer rather than making such a radical edit to mine. I've rolled your edit back. –  razlebe May 22 '13 at 5:23

View all linked questions of any post using the format: http://stackoverflow.com/questions/linked/<post_id>

These could be further sorted as:

1. Hot
4. Active

For example http://stackoverflow.com/questions/linked/3102819 shows a page having all questions linked to/from "Chrome: Disable same origin policy" post.

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That's not hidden when it is needed. At the bottom of the Linked column on the RHS of the Q&As there's a link "see more linked questions…", such as for the question you've used as an example. This feature is hidden, i.e. still available but unlinked, for Q&As with only a few linked questions that all fit on the RHS. –  Mark Hurd Sep 3 '13 at 17:44

Putting a parameter ?lastactivity at the end of the question's URL will redirect you to the last activated (modified) post.

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Nice, did you find it yourself or after reading this? :) –  Shadow Wizard Oct 3 '13 at 6:38
@ShaWizDowArd - Nope. Actually today my internet connection is slow. And clicking on modified 1 min ago in the meta.stackoverflow.com/questions?sort=active page redirected me to questionsURL/?lastactivity which I was able to see that in browser's URL bar. –  hims056 Oct 3 '13 at 6:41

I was going to post a request asking for questions determined to be duplicates to be listed on the original question, but I found that there was already a feature request for it and that it was because you can find questions that are duplicates of this one by looking at the "Linked" sidebar. Cool!

(Note: also appearing there, are questions, comments, etc. that link to this question.)

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As an aside: the "linked" section does not only show things linking to a question, but also links from posts and comments of the question itself. –  Arjan Apr 13 '11 at 21:26

### Shortening questions and answers URLs

Let's assume the following URL to answer:

http://stackoverflow.com/questions/5988444/why-is-the-llvm-execution-engine-faster-than-compiled-code/7250716#7250716


We can delete the middle text part, change the question to 'q' and leave only the answer number and still have a working URL : :)

http://stackoverflow.com/q/7250716


Just try it!

While this way is not recommended, it is supported and works - according to what @genesis wrote.

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Hidden feature? You can click on the link button under any question to get this link... –  Kobi Aug 31 '11 at 11:45
That's not really "hidden" - try the "link" link below the question! (This gives you an additional /168089 in the end, which can be safely removed - this number is you user number, it indicates that it was you who posted that link.) –  Hendrik Vogt Aug 31 '11 at 11:46
@Kobi you mean "share". ;) –  Shadow Wizard Jul 3 '13 at 13:08

## protected by hims056Oct 3 '13 at 5:42

Thank you for your interest in this question. Because it has attracted low-quality answers, posting an answer now requires 10 reputation on this site.