OIC... so 'slowrolling' is basically just being a bit of a jerk. Not really any advantage.
I used to 'slowplay' just about every big hand I got by that definition.
I've changed my style to what that poster described as a good players mindset. I play fast, don't minimum raise or limp into many hands, and bet confidently when I decide to play. Cashed in 3 of the last 4 tourneys and doubled each prize during rollover.
May have just had a lucky few days, but think simple change of mindset is really it.