i've found that even raising 4x the BB (40 cents) people will still call you down. raising 1 dollar then people will think you're bluffing and call you down. raising all in preflop they'll think you're a maniac and call you anyway. no one ever folds in those penny games, especially at RVP. if you stick to those levels you will take a lot of bad beats. i'd recommend moving to 25/50 cent limit. you'll make about the same money, with less variance.