Anti-spam
Introduction
You have probably seen an increase in the amount of "junk mail" which shows up in your email box, or on your favorite newsgroup. This is known as "spam". There are many ways to stop them from appearing to you, using a client with spam control. If you are a webmaster, you can install some bots on your web server to help prevent spammers from sending spam to you.
Client-side
Server-side
Links