wrong benhilo!
you give a rake back higher than 100% only if you want to generate traffic in your room. Why would a prima site give such a rake-back when they do not need more traffic (i.e. they have already 10'000 player at any given time)
Then imagine such player get 60% rake-back on the 60$ he raked. That makes 36$ back + the deposit bonus, which is still less than what you get with the profit bonus especially if you know that you also get the deposit bonus.
Can you give me the name of a room that offers 60% rake-back? The highest i know of is
www.gamingclub.com at 35% and 30% at royalvegas.com.