This player, Frog:

http://warlight.net/Profile.aspx?p=539270894
51% boot rate, over 235 games.

121 boots!!!

Just played him here:
http://warlight.net/MultiPlayer.aspx?GameID=2117223

He gives up, even though he aint too bad, and ends up booted.

Heads up incase you don't wanna wait 5mins for boots.

And another heads up:

Frosty G, whom I played here:

http://warlight.net/MultiPlayer.aspx?GameID=2138172

had a 78% boot rate when we played,
101 games out of 130.

Profile: http://warlight.net/Profile.aspx?p=9610034793

So give your games a boot percentage filter..?