Automatic leave of the giveaway

It would be great, but this would also means GAs with less than 10 entrants would not be counted (if it was some kind of contest, for example).
I usually go in the entered GA list every time I win a game and remove all the entries to that game.

There are a couple of issues with automating this.

1. What if the first guy never delivers? You then got kicked from another giveaway you might have won and don't get your winning. It might be hard to track the giveaway to enter again if it was private.
2. A lot of people don't understand how things work and will mark the game as received before actually getting it, thinking this is how they get the game. (Especially non-English speaking users) So even if the received mark was used for that purpose, it would still be error-prone.

The site already queries your entries and wins as you request, so all it would have to do is query a winner (which doesn't happen every second) for his other entries (which aren't too many).

+1
Pretty much this.

It could be as expensive as sync'ing an account plus checking coincidences.
Just as time consuming as 10 hits of the front page or just opening a forum post with several replies.

i think, i should do the same that since now =)