You're welcome.
It's 1% of wagered amount, so it will start adding up when you play again. Minimum bonus is 0.00001000 BTC.
Sorry, did not understand that. What is 1%?
Also, do I need at least 0.00001000 BTC to be eligible to "Multiply bonus account"? Because I have more than that and can't find the option to bonus account...
Last question (promise, won't keep bothering): sometimes I see "free" on the Roll History, what is that?