Slow playing the word used in poker for those players who usually take some time, and used the idea that the opponent will make a big money deal; this idea is now rarely applicable as all of the players are aware of that now. So you can’t expect that your slow playing can result well, moreover, try to be concentrated at your opponents tricks.
If you are at a real poker table, then try to be more active as compared to internet poker.
At poker internet you are playing against software, while in normal poker, you have to play against real opponents, beating software may be a bit easy, as you already got the algorithm of the software, but you can’t consider you r real opponents as normal. Concentration is must otherwise it’s hard to win a game or beat your opponent. Try to keep the game at poker sur internet, else can’t be the winner.
Never try to play slow game, but if you have more tricks to play you can bring them in use, slow playing is no more expected to be good.
Slow playing can be good, when you are playing with a new player, as he could not understand the trick and thus you may have a good amount at final play.