Online comment forums create ample opportunity for behavior of such extreme jerkitude that it can drive even the most patient Netizens batty. You know what I'm talking about: The know-it-alls, fight-starters, and doctrinaire zealots who seem to frequent every message board on the entire 'Interwebs', using any and every topic as a springboard for their sociopathic gratification. We've sifted through pages of forum messages to find the most absolutely asinine tactics. So get ready to cringe: On the pages that follow you'll meet our nominees for the 12 biggest jerks of the Web's online forums.

For additional coverage of the jerky and embarrassing demimonde of the Web, check out these stories:

• "Jerks of the Web" by Erin Biba

• "Top 10 Tech Embarrassments You'll Want to Avoid" by Dan Tynan

• "The 13 Most Embarrassing Web Moments" by Christopher Null