Rakeback
A refund of part of the rake, 60% in my case. It applies to the rake only, never to the jackpot fee, which is why the two are never merged into one figure.
Rakeback is the part of the commission the room gives back. Usually through a loyalty programme, tiers and bonuses; in the Daily 300 sessions all of it is reduced to one rate, 60% of the rake paid. It comes back later and not into the pot, so in a session's result rakeback is always a separate line.
It is counted from the rake only, not the jackpot fee: the second commission goes to a prize pool and does not come back. That is why in the sessions rake and jackpot fee are never added into one figure, although both are taken from the same pot. Over fifteen sessions the rake came to $267, the jackpot fee $72, the rakeback $160.
What it means for the result
For a player with a win rate near zero, rakeback is the whole profit. Over nine sessions the series made $476.65 before rake and $245.62 after it, with the commission at 8.4 bb/100. A player winning half as much from the field as I do would be at about zero after rake, and positive with rakeback. Most regulars at low stakes live on exactly that difference.
The same in business
Rakeback is a platform's discount for those who bring it turnover, and it turns the player into a supplier of turnover. Whoever lives on rakeback depends on the room more than on his own game: the programme's terms change by email, and a win rate does not. Count your economics both with it and without it, and know which of the two figures is the real one.
The whole hand is in session 9: “If you get to choose, be the marketplace, not one of its users”.
The other terms are in the glossary.