Winner ignores me!What now?

You don't get points when the gift is given. Creators of giveaways get nothing extra.

Also, the winner has a week to claim the gift before you can report it. It's only been 16 hours. Hasn't even been one day. Sit back, relax, and wait.

read the rules damn it

I'm not 100% on this but i believe if you mark the gift as sent and the winner doesn't respond within a week, I think you get positive feedback. Like Psycho said though, just sit back and relax and wait. I don't check my email but maybe once a week. I only know if i win when i log onto steamgifts and notice. I hate it when random people add me as a friend too. I always turn someone I don't know personally down on the friend invites on steam. Just saying if he is at all like me he pry doesn't know he won yet.

Same here.
http://www.steamgifts.com/user/DrCupcake
This fellow here just does not accept my friendship request.
It has been more than one week, and he's marked that he hasn't received the gift.
I did send it. And to the other winners, as well.
http://i56.tinypic.com/mih3z6.jpg
As you can see.

I added him, or tried at least, more than once.

I should say that this feels really ridiculous now. It seems he doesn't check his email, and ignores me. How am I supposed to reach him?

If someone does not even want to take the time to accept your friend invite and chat for a few seconds to thank you for the gift, then just don't send it to them. What's going to happen? You don't get a "gift received" checkmark? Who cares?

Still nothing.
Uh.

Um. Help. Please?
What do I do?

Please email support about situations like this, especially if it's been more than 7 days.

Edit: inbox@gmail.com and sgiftsreports@gmail.com