query: How often do CAPTCHAs appear?
positive_passages.docid: 21437
positive_passages.text: The Complete Rate-Limiting Guide
negative_passages.docid: 139119
negative_passages.text: Warning "You haven't voted question for a long time" disappears too fast
negative_passages.docid: 35029
negative_passages.text: CAPTCHAs are intermittently blocking CDN content
negative_passages.docid: 24345
negative_passages.text: Please stop asking me a captcha with over 500 reputation. I am human
negative_passages.docid: 88917
negative_passages.text: How can I get Google to stop thinking I'm a Bot?
negative_passages.docid: 95021
negative_passages.text: Why am I being redirected to a captcha when I am just searching?
negative_passages.docid: 56732
negative_passages.text: Can I use a one time pad key twice with random plaintext?
negative_passages.docid: 38986
negative_passages.text: Anonymous questions and Avatars
negative_passages.docid: 10503
negative_passages.text: CAPTCHA not displaying on "Human verification"
negative_passages.docid: 69870
negative_passages.text: How many users use browser's text search within a page?
negative_passages.docid: 44625
negative_passages.text: Is it normal to get hundreds of break-in attempts per day?
negative_passages.docid: 119510
negative_passages.text: Recommendations for java captcha libraries
negative_passages.docid: 370
negative_passages.text: "Spam Voting" - Should we stop it?
negative_passages.docid: 140480
negative_passages.text: Timestamps for spam and offensive flags not shown
negative_passages.docid: 9604
negative_passages.text: How long does Google take for the rating stars to show up in the SERP?
negative_passages.docid: 143740
negative_passages.text: When does a login happen automatically?
negative_passages.docid: 144976
negative_passages.text: Blocking comment spam without using captcha