Your Absolutely right GI, I didnt want to add captcha because of the same reason. But i have added it temporarly while this vulnerability is being exploited. Going to add an option to my website problem emailer for people who have visual impairment to email me to sign up.

I have also already enabled the RBL plugin (although my knowledge on how to use this is limited), didnt know about it until I upgraded to 3.03. thanks for adding this.

It is comment spam.

If you type "george-walker-bush.info" into google you will see the amount of Xoops sites its registered with, sometimes more than once. It looks as though its exploiting the news module though as i've not seen it posting comments on other modules.

Sometimes it post a list of URL's (around 20)
Sometimes it posts a story with many URL's (around 20)
Once I have seen it posting an anti-gay comment.

Thanks
Barry