Some recent numbers:
3,195 submitted games
1,100 of those have been removed for various reasons
949,156 users have voted for a game that they want to see
9,998,476 overall votes
10 games only got the "green light" so far
(German source: http://www.gamestar.de/news/branche/3005239/steam_greenlight.html)

Makes me feel only cautiously optimistic.

"Falls das Resultat nicht einfach nur dermassen gut aussieht, sollten Sie nochmal von vorn anfangen..." - Manual

Check out my new game: Pogostuck: Rage With Your Friends