3 of my co-workers and I just solved level 49 today. Took us just a little over a week. Dont cheat, its so much more fun when you actually play the game. If you can find someone who is smart but thinks completely differently than you, team up and work together. Often times we missed things simply because we were all thinking along the same lines.
I hear there is another one called Not Pron. We might have to figure that out next week.