What do you think of this site?

Well, I must disagree with you there.

Most giveaway sites (including this one) operate on the principle - the more you spend, the more chance you have to win games. And also, they employ feature where keys are droped in the shoutbox on the main page and contributor value or level (or whatever is used to measure your donations to the site) has very little influence on it. Their gift system ensures no-one gets screwed with their winnings, which is a plus for me.

As for support, I admit I may have insufucient info to pass judgement, but I can say whatever issues I had, they were cleared up very quickly. Also, the support team and the mods were pretty friendly and helpful in my dealings with them.

IMO, Steamgifts and Playblink are head and shoulders above other giveaway sites.