Linked Questions

340 votes
1 answer
19k views

The Complete Rate-Limiting Guide

I noticed that I can only perform certain actions such as commenting a finite number of times in a given period of time. Obviously, rate limiting is in place to prevent accidental misuse or ...
8 votes
1 answer
665 views

What triggers the CAPTCHA page? [duplicate]

Occasionally, when I ask a question on some Stack Exchange site, I'll see a page like this wanting to verify whether or not I'm human. I'm trying to figure out what I am doing that looks ...
Peter Olson's user avatar
  • 7,702
4 votes
1 answer
736 views

Stack Overflow does not use Captcha for verification anymore, how can they defend against bots? [duplicate]

Last time I posted a question (about one year ago), I noticed that Stack Overflow had the "Are you human?" verification check with Captcha. Now, we seem to be able to just post questions and answers ...
user154230's user avatar
-1 votes
2 answers
184 views

Why captcha shown after adding required characters to answer? [duplicate]

Possible Duplicate: How often do captchas appear? Those rules are not true: one edit every 30 seconds one answer every 60 seconds one question every 60 seconds This was first answer in few ...
lazyberezovsky's user avatar
-1 votes
1 answer
188 views

Why do I keep getting accused of trying to pass the Turing Test? [duplicate]

Possible Duplicate: How often do captchas appear? Why does SO think I'm a bot? Please tone the captchas back down I have very frequently been presented with the captcha page over the past ...
jprete's user avatar
  • 406
1 vote
0 answers
73 views

Why am I getting so many captchas? [duplicate]

Possible Duplicate: How often do captchas appear? I've not had to solve a captcha on SO for ages, now suddenly every second click I have to solve another one. has something changed?
gnibbler's user avatar
  • 884
1 vote
0 answers
25 views

Logic Around Human Verification on SO Sites [duplicate]

Wondering, at a high level, what is the logic around the human verification interstitial that appears some times when submitting a new question? I am asking because I am working on a similar system ...
GWR's user avatar
  • 199
18 votes
4 answers
643 views

What actions are rate-limited, and why? [duplicate]

Possible Duplicate: The Complete Rate-Limiting Guide I've seen a number of time delay notifications on the sites. E.g.: you can only comment every x seconds What are all the situations that ...
user68183's user avatar
  • 867
1861 votes
0 answers
126k views

FAQ for Stack Exchange sites

Community FAQ For sites in the Stack Exchange 2.0 network To see a list of commonly used words and phrases, see the glossary. For official guidance from Stack Exchange, visit the Help Center. Asking ...
38 votes
2 answers
533 views

Do not repeatedly require trusted contributors to solve captchas when they attempt to post

By now, I've solved hundreds of captchas on Stack Exchange, maybe thousands. Often when I post (conservatively, at least 30% of the time), I'm presented with this: We can't quite tell if you're a ...
CertainPerformance's user avatar
6 votes
4 answers
376 views

Eliminate the captcha on long questions & answers

It seems that I quite often get a captcha confirmation when I post a question or answer. All it takes is to write a longish piece of text or check a couple of things to make sure what I am saying is ...
Lawrence Dol's user avatar
  • 4,769
13 votes
2 answers
279 views

Please tone the captchas back down

In the past few days (I can't remember when this started, I think around 2011-10-20 give or take a couple of days), I've had far more captchas than usual. I'm getting more than one a day, when until ...
Gilles 'SO- stop being evil''s user avatar
3 votes
1 answer
451 views

Why am I prompted for a CAPTCHA even though I didn't trip any of the rate limits?

Why am I prompted for a CAPTCHA when posting even though I didn't trip any of the rate limits for CAPTCHAs documented in The Complete Rate-Limiting Guide?
Moab's user avatar
  • 151
8 votes
1 answer
314 views

Why does SO think I'm a bot?

Lately I've been getting CAPTCHAs almost every time I post an answer. Is there any particular behavior that makes SO trigger the bot test so often? EDIT: It just occurred to me that most of these ...
hammar's user avatar
  • 10.7k
2 votes
1 answer
177 views

Captcha is a little draconian on here

I've been asked it three times today which is bordering on annoying. Last instance was trying to post with a new tag (not allowed to do that) so I removed it and hit post again. Bang - unreadable ...
user131750's user avatar

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