Linked Questions

340 votes
1 answer

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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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