What is the deathmatch all about?
Can you die in DM?

No. They're just simple polls for fun.

So, there is no fighting?

no, it's just a popularity contest

And what are the gains of a deathmatch when you are popular?

There are no gains with a deathmatch. It's just for fun.

You just get your name added to the tournament winners page.

It's all random selection, anyhow, so it doesn't mean anything. (: If you have Yes marked in your Profile for DMs, you have a chance at being selected for a tournament. No real gains, no losses. It's just something to do.