I won sweepstakes and the guy didn't deliver

How long ago did the GA end? if 7 days or more, then mark as not received and move on...

https://www.steamgifts.com/about/faq

Not much you can do as Ed McMahon is dead.

This should not be in the 'Deals' section of discussions, 'General' seems more on point.

From the FAQ:

• If I win a game, when can I expect to receive it?
  Giveaway creators are allowed one week to send the gift after their giveaway has ended. Depending on the type of gift and the giveaway creator, you might receive the gift to the email address you have listed on the account page, a key might be added beside the gift you won, or the giveaway creator might have sent you a friend request on Steam to make the exchange. Please remain patient, and do not contact the giveaway creator during this time. If the gift is not received after one week, you can mark the gift as not received, and attempt to contact the giveaway creator on Steam to follow-up.

Also this should be in Help not deals.

You close this thread.

You've been here long enough to know how giveaways work.

Also, stop creating these silly little threads (in the wrong sections, no less) to complain about another user, or to beg for games or about not winning anything, or hating dogs and cats. Most of your threads are pointless and we don't need them. It's not like you're really trying to interact, it even seems to me like you're just trolling most of the time.