re: Poker & two pair vs straight flop
On the flop I either bet it for value or check, depending on my opponent (I bet a lot more often than check if I'm in position).
If I'm raised all in (whether it's a check raise or ordinary raise), at 1c/2c I call even for 100bbs.
Against competent opponents, I fold here sometimes but not as easily as the others who already responded say they would.
You still beat a lot of hands, AQ is about the weakest you can hope to be up against and I'm not calling on the hopes of being up against that, but AT and KT are very possible here. AA and KK are extremely unlikely given that your opponent didn't raise preflop and you already know where two A's and K's are which leaves only TT and QJ. It's dependent on my opponent whether or not I call.