Rake: Online poker rooms make their money by
automatically taking a cut of the players' stake money; this is
called the 'rake'. Typically the rake is 5% of every pot. Playing a
few hundred hands a month soon accumulates a large amount of rake,
and you could be paying tens of thousands of $$$ a year in
rake!
Rakeback: Players can get upto 80% of their
rake money back through a rakeback professional.