potential spam attack on mah forum

[Sushubh]

i seem to have annoyed a group of people behind the web site a2zchennai.com. one of the dudes has 'promised' me on gtalk that he would get his entire team to register on my forum and post spammy messages.

now i know i can enable the setting which would require all new registrations to be manually approved by the moderators.

but that is not exactly friendly...

i need some plugin which would help me control the activities of new members on the forum.

also something that enables me to replace the text a2zchennai.com with someothertext.

thanks
Sushubh

ok i installed a plugin named Prevent Spam. let's see how it works.