we had a lot of abuse with giveaways...
but depositing ETH is fast and cheap.
and you don't need a lot to get started.
The minimum is 1/1000 of an ETH...
www.wheel99.com
It is normal, once there is a giveaway then there will be some people try to abuse it. The only thing you can do is to give a very strict rule for the giveaway. At least dont just give free money, competition or contest would be better for promotion purpose instead of just giveaway. Would you offer such competition/contest in the near future?
Yeah nice Idea!
I think they will have some contests in the future xD Maybe wagering contest