I specialize in bringing an end to pedantic lines of argument by annoying the other person until they flip their keyboard and stop posting.
Examples: Squidboi (http://community.livejournal.com/talk_politics/198259.html?thread=11782003#t11782003) The already mentioned dwer mcpreacher, except for this, which I hope you can agree was just plain mean (http://community.livejournal.com/talk_politics/201052.html?thread=11934556#t11934556)
My card
Examples:
Squidboi (http://community.livejournal.com/talk_politics/198259.html?thread=11782003#t11782003)
The already mentioned dwer
etc. etc. etc.