We recently had the same problem on the gazebosim.org/wiki. In place of captcha, we have enforced openid login. So far we have experienced no further spam.

-nate

On Mon, Feb 4, 2013 at 11:23 PM, Tully Foote <tfoote@willowgarage.com> wrote:

Thanks Ivan, 

It looks like we're going to have to step up the captch challenge. 

Tully

On Mon, Feb 4, 2013 at 9:15 PM, Ivan Dryanovski <ivan.dryanovski@gmail.com> wrote:

Hello,

A very friendly heads-up to the powers that be: the ros wiki is
getting hit by a lot of spam bots. Going to the recent changes will
reveal a large number of user personal pages with spam.

Cheers,

Ivan
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Tully Foote
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(650) 475-2827

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