Wiki-translation discussion

There is a spamming robot that keeps adding comments to pages on wiki-translation. For a while, the volume was pretty low and I didn't mind tracking and deleting it. But lately , the volume has increased to a point where it's starting to be annoyin.

> There is a spamming robot that keeps adding comments to pages on wiki-translation. For a while, the volume was pretty low and I didn't mind tracking and deleting it. But lately, the volume has increased to a point where it's starting to be annoyin.
>
> Is there a way to prevent that without requiring that people register in order to post comments?
>
> For example, can we activate Captcha for anonymous comments in the same way that they are enabled for page editing?

Captchas ARE enabled for anon comments. But Tiki's captcha test is so bad that robots seem able to get passed it.