i think its hard online, in smaller buyin tourneys, cause noone gives anyone any respect. If you've had time to give yourself a tight image, or you're playing with familiar players who know you, then i think it works, especially against an aggressive player. I sometimes just call a cont. bet then if aggressive player checks, usually means he knows i normally wouldn't call unless i hit and he is worried about trap. A good bet will usually take it down after that. I wish I could use stategies like this more often, but I'm a chicken.