[Palomino]

You are right, the rake paid in the general tab is not contributed in the rakeback sense of the word.

There are 2 ways to calculate contributed rake. First is the weighted calculation where you get a percentage of the rake paid depending on how much money you invested in the pot (even if you don't win). So if you invest 30% of the money in the final pot you get 30% of the rake of that hand toward your total rake paid.

Also there is average contributed where you get a portion of the rake paid as long as you contribute anything to the pot. So if you limp in and fold after the flop you get 33% of the rake paid (if the pot was 3 way) even though you contributed less to the pot than the other 2 players.

Hope this is correct and makes sense. Feel free to correct me if I'm wrong.