Computers

A plugin which identifies and blocks comment and trackback spam on blogs with integration to various blogging systems.

A spam protection service for websites.

A guestbook script with good anti-spam measures.

A free, distributed service that tracks comment spammers and allows website administrators to block them through its http:BL service.

Provides statistics and various information about persistent spammers on message boards and blogs.

Recommendations from Google Webmaster Central on captchas, automatic filtering, and other anti-spam tactics. (September 26, 2008)

Very short tutorial. (January 08, 2005)

"""Here's a look at the battle so far."" (September 16

Spam has never been limited to e-mail. But now, commercial pitches are increasingly popping up in online chats, instant messages, cell phones with text messaging and weblog comments. (November 14, 2003)

Weblogger crystallizes the thoughts of many in declaring a cyberwar on those who inappropriately post in guestbooks and weblogs. (November 08, 2003)

"Spammers are turning their attention to weblogs, angering technology analyst Bill Thompson. He calls it ""flyblogging."" (October 24

Suggestion that bloggers create posts that target the same spammy phrases that blog spammers want Google to find. (October 06, 2003)