For example,
i send coins to escrow
escrow confirms this
you use your own coins and generate the profit
you send coins + profit to escrow
escrow releases my initial deposit to you and what you sent to him to me.
correct me if i'm wrong
then it is better to make a giveaway page
and wow what a bitcointalk where any person not have even 0.0001 to prove me right
If you need some bitcents to gamble, just ask me , i'll tip you lol. Don't have to come up with all these schemes. Directbet is one of the reputable site here, i don't think they can be exploited.