When I have a big pair, bet it, and miss the flop, I slow down. Even if I still have top pair, I examine the flop for suited cards, connectors, or pairs, as they create dangerous flops. In this day of Gus, Gavin, and all the others on TV, taking pots with rags, you have to figure that there's a possibility that someone, or the one you're in the pot with has either hit with that crap, or gotten a draw. Even if they've only got a double draw, they figure they have outs, and since it's a freeroll, betting big doesn't work against them. Besides, since it's a freeroll, what do they have loose, especially when they can steal some real money
from a better player.