Ok since I'm the 'devils advocator Mod' (Thanks Cyclone) and constantly arguing here I thought I'd pass along my A-Z guide of winning arguments here.
To begin with, find a thread that has already gone on for at least 4 pages and that everyone is bored of.
Gleam through the thread for some rough Idea of what it is about
Choose a side
Rant on about your side of the argument for pages and pages without any punctuation especially paragraphs & sentences (Ranting on for a long time means that few people will read it completely, the lack of punctuation means the rest of the people won't either)
Post Twice as much as any other person involved in the argument (kinda the might is right theory)
Constantly refer back to 'my earlier thread' since no one has read it they will be unable to refute whatever you say.
Do not accept anything anyone says, if you can't think of any comeback just say 'Don't be ridiculous' or 'That's the silliest thing I've ever read on an internet discussion forum' (this is particularly insulting because people generally say sillier things on forums than in real life)
If anyone consistently refutes you intelligently either bait them into a flame war and then tell them 'I won't discuss this with you any further as you seem unable to keep it civil' or simply continue with the '...silliest thing...'
At the end of each day make sure your post is the last on the thread
Once everyone is either bored or pissed off with you you have won by default. If no one else is arguing, you have won
Now go have fun