Charity gambling site it's a very good idea ;-)
Charity gambling or not charity gambling. Currently both forms of gambling are illegal in some countries. Except for playing with bitcoin which can't be regulated.
Well, bitcoin has to be integrated into more mainstream uses first. Once it gets around to store retailers and online sales with more strength, then it will be time to look into more specific uses such as sports and competitions. Gambling really just took off that fast with bitcoin because it is a legal workaround to something that would be illegal with fiat, nothing else.
It is true, but now the laws in countries like US are getting strict which is causing these sites to shut down or the owner's facing legal charges like Micon @SWC . But yes there are still way around that. I feel slowly more and more sites will eventually have legal issues with running, but since its an unlicensed industry there is nothing that will stop new sites to come up.