the recent promotional deposit bonus was a bit unfair don't you think?
it said deposit any amount and get 10 new rolls on wheel of fortune. which means if you deposit 1 bitcoin you would get the same number as someone else who deposited the minimum amount of bitcoin!
i think such promotions should be based on amount deposited and you should get 1 new roll for every for example 0.005BTC.
The last time we did a deposit bonus giveaway it was for Golden Tickets and in exactly the format you suggested and ran for 48hrs each time. Unfortunately, one individual started depositing and withdrawing the same 2 BTC constantly for 48hrs every time we ran it. We think this is a lot fairer on everyone and a lot less attractive for high rollers to abuse.