Had to add my 2 cents here since we are talking about 50 cent bonuses.  lol.  I play relatively often mid stakes and tourneys and have received my bonus as stated in the increments mentioned by a previous poster.  Here is some advice though, instead of even responding to this guy you should just give him a 3 mbtc bonus which is a whole $0.70 cents and then he will get more than his $0.50 cent bonus and he will be happy. lol and you will not have to waste the time even dealing with this nonsense.  For the amount of rake he generated and the amount of time you spent trying to service him, you really took a loss!  I do see very good customer service in this though, but these type of people will bleed you dry!  Betcoin and bitcoin FTW (for the win)!

Also, I don't see how he could play at another online poker site because I am a long time member of ACR and it does pay out the bonus the same way but slower and some other sites don't even have bonuses.  Now that would be really stealing your bonus!  lol