OK. I believe insomniac to be Mafia.
These are his only two posts:
http://www.vgchartz.com/forum/post.php?post=2938564&page=4&postnum=3
http://www.vgchartz.com/forum/post.php?post=2940610&page=12&postnum=4
This is typical bare-minimum posting, with supposed content (but nothing new, just repeating others) and general comments that can't be pinned down to a position. I've seen it before, I've even done it myself when I was Mafia, but it is a huge warning sign I can't ignore. Especially the non-commital 'I might change my mind' with the No Lynch vote - if you don't believe in No Lynch then don't vote! Everyone else was having fun yesterday by posting random stuff, but that was just 'OMG I've got to post today - but not suspicious!!!' type thinking.
Vote: insomniac17
