The slowplay def. has it's uses, but so many people make basic mistakes:
1 over value their. hnd. You can slowplay a monster, but so much depends on reading the texture of the board, and having a good read on opponents. When there are strong flush and straight draws out, a set is a poor choice in a multi player hand.
2. Overuse the play. Against any but the loosest players, you'll be money ahead in the long run to bet your solid hands strong. Too many people try to be too cute and too clever too often.
One of the biggest problems with sowplaying online is the number of hands seeing the flop , esp. playing micro stakes. Everybody limps far too much, everybody chases, and if 4-5 players are chasing the same pot, the odds
of somebody catching are way against you
Keep the Sklansky ommon mistake in mind when considering a slowplay. Without quoting them at length, the important ones to remember in these instances are: Don't check when you should bet; don't call when you should raise