I have just joined in the contest.
I think it would be better to give out 10 prizes or 10% of the participants instead of giving all the tokens to only one winner.
We understand your concerns about the distribution of the prize, this is an special way for us to offer you guys a nice way to earn a NICE stake of our tokens, if you guys make the maths, we are offering 2000-2500$ dollars worth of Ethbit token at ICO price for just one person instead offering a insignificant amount to all participants. IMO this is an incredible profitable bounty, we were running this thunderclap campaign without offering bounty, we decided to do it for you guys. This is not even a long term campaign like a twitter campaign or a signature campaign, its just an easy way to offer some big rewards to people who wants to join to our thunderclap contest and cant spend time doing a long term campaign.