[zoobird]

I play mostly freerolls, and your last sentence describes it perfectly. In freerolls (and I think most low buy in events) many of the players are only thinking about their own hand. They're not thinking "ok, the flop missed me, but it probably missed everyone so any bet is likely to be a c-bet, so I can steal here". So a flop like 952 rainbow is going to be very easy to take with a follow up bet. That said, I still think its worth betting 2/3 of the pot...1/2 just doesn't seem to win it often enough.