Re: [Haskell-cafe] [Haskell] Spam on the Haskell wiki

Hi Gwern, First of all, thanks for your patience. I am willing to do administrator tasks.

4. ReCAPTCHA enabled for 'edits adding new, unrecognized external

...

links' - which is all of the spam.

This is already enabled.

I guess the problem may be due to "ReCAPTCHAhttp://www.google.com/recaptcha/learnmore"; so you can choose to use a custom built CAPTCHA that is more difficult to crack. You may find some open source captcha systems better than the "ReCAPTCHA". http://jcaptcha.sourceforge.net/ To forge the relay attacks on CAPTCHA, you may try early timeouts and/or increasing length of CAPTCHA text. This potentially may mean more trouble and nuisance to legit users, but I guess, the Haskellers will be willing to pay this "small" price for a better web-site experience for them. :) Relay attacks: Remember that there are human solvers employed in countries like India, China, so any human solvable captcha will fail to work as desired. http://en.wikipedia.org/wiki/CAPTCHA#Human_solvers The problem is not detecting spam, since that's

quite trivial: it's very hard to miss.

Thanks for providing more info. So, another doubt, if detecting spam is trivial, then why not just send the detected spam to trash directly without any human inspection? This may mean some trouble for the posters due to "false positives"; but the moderator's job can be reduced to some extent. I hope, this is useful. If not, please forgive me for causing more reading trouble for you. Regards, -Damodar On Fri, Aug 3, 2012 at 7:29 PM, Gwern Branwen wrote:

On Mon, Jul 30, 2012 at 6:59 PM, Alexander Solla wrote:

...

We could even have a "report spam" button on each page, and if enough users click on it (for a given revision), the revision gets forwarded to a moderator.

This would be useless. The problem is not detecting spam, since that's quite trivial: it's very hard to miss. The problem is that the moderator (ie. me) is already overworked. The spam needs to be reduced to begin with, not detected.

-- gwern http://www.gwern.net

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