I know its "random" and all, but...

That is a horrible suggestion. The whole point of "points" is to make users more selective on which giveaways to enter. Yes, most people who entered these giveaways prior to the point system gained an unfair advantage, but give it time. I personally think the mods of the site are far more generous than they should be with how many points you gain whenever something new is added. Personally, I've won one game (Dark Messiah Might and Magic - Multiplayer only).

If your system were to be put into place, we would probably see around 10-20 entries for most of the giveaways and probably thousands for the "big ticket" items since people would only be willing to lose all of their points on these games.

First off, I applaud you on at least attempting to make a suggestion instead of simply bashing it and walking away. I agree that it sucks to see someone win over and over, but in random scenarios that will happen. I would love to see a setup that made it so that you could not win the game if you already owned it, but taking away points after a win makes only a single thought scenario occur: I don't want to lose all my points by winning something that I merely wanted a little, so I will only enter the big games that I've been dying for.

This is effectively the scenario damnstraightnc suggested. That said, losing all the points for the entries to other contests of THE SAME GAME sounds justifiable. Now that I would not be opposed to. If you have entered every single contest for a single game, it is apparent that that game is important to you, and since the point cost is based on price, you have already stated that you are willing to invest for the possibility of losing these points. So, maybe just rolling back your idea a little, losing the points that you have effectively already spent for the same game in other contests. That sounds like an option to me.

Currently you need 50 points to generate an invite code to the site. Your plan would basically stop people who recently won from being able to invite their friends. You would also remove part of the incentive for them to turn around and submit a game since they would not get the 1-5 points doled out by their own submission. Why not just stop them from entering for 5 days WITHOUT screwing with their points.

just for clarification: when i entered for games i already owned, i was only thinking about my girlfriend to sent the gifts to (i got a code for her now). i wasnt trying to enter every contest and give away or sell all my winnings to everyone i know (or dont know). but i do get your point and i hope that the invite code generator will bring more good than bad.

oh yeah and i won that second copy of portal while i was away so i couldnt exit the giveaway before i knew that i even won the first one. getting more than one was not my intention.

Ok, I think I'm on board with this. If an official rule of the site was to read each description of any contest you enter than that would be great. I don't see a reason to restrict people who have already won, but I suppose I wouldn't mind that being up to the gifter.

I do think their needs to be a rule explicitly stating that you won't be banned for refusing to gift a game to a winner who already owns the game.

While I agree, there is a problem. I don't think most people read the description before they enter each giveaway. This is evident by how many times I see people asking questions that were answered in the description. If the description was emphasized more, and the "enter giveaway" button was moved below the description, your suggestion could work.