On the face of it, $100 is a non-trivial amount for your basement indie dev. On the other hand, hopefully those with a decently strong pitch would be able to get donations from people interested in the game, in exchange for promises of a game key if the game is accepted.
But wouldn't something smaller like $50 still work as an effective deterrent? It's not an amount of money your average kid would part with for the sake of a prank.
You don't have to (they don't wipe your original votes) -- I just feel compelled to.
I wish I could just wipe my original votes - I did not treat the thumbs up button as something I personally would buy, just something I thought was worth getting put on Steam. The new language makes it much less likely that I will give something a thumbs up.