Possible contribution flaw?

Lokonopa is. He got the power of seeing IP addresses

They need $50 worth of games linked to their account to be able to register on steamgifts.

Giveaways with only one entry don't count toward the total. Also, an account that looked like that would be pretty easy for the moderators to spot.

It'd be easier to get a bunch of underpriced games via bundles or sales and just make legit giveaways. The site treats them as full price anyway. Pretty much what we've been seeing.

Also 1 entry giveaways are not counted towards contribution. I think that they are also monitoring private giveaways to detect such behaviour. It has been thought of this problem since the contributor giveaways have been designed.

There have been people in the past who have tried to "grind" their contribution value. The mods picked up on this quickly and I'm sure there's some kind of automatic system in place to combat this.

every account requires $50 worth of games to register on SteamGifts. Giveaways with 1 entry do not count towards total contributions. Therefore, do do this, the person would have to spend $100 (less with sales, but you get the point). I hope that nobody is stupid enough to throw away that much money for a slight increase in odds.