Hiya
i found this website where you can find ips that have been added as a spammer thought i would help you all by giving you the link to it so you can ban the ip on your fourms..
StopForumSpam is an excellent spam resource. If you use vbulletin there is also a modification you can install which will link to their site when people register and check a variety of information.
The only downside of it is that if the StopForumSpam site goes down, the modification stops working and no one can register. But, in their defence, this happens rarely!
We have that integrated on this forum. If you search on the contributors page you will see we have made 32 submissions so far. It has worked quite good so far. It has stopped a few spam accounts (some still get through but nothing is 100% perfect).
