Is this a reason for picking a new winner?

This gamer - I do not show the name of - has not sent anything for this community

This is lame, but not a valid reason for reroll.

has got private profile. There is no chance to check him/her.

Have you tried asking them to make their profile public for verification purposes?

No. You can ask support to check their account if they won't make it public.

Send game and blacklist him/her, only thing you can do.

I never wanted to start a blacklist but then i came across simular cases like this and was like; "WUT.!?"

I even encountered someone who had won over a 100 games and not contributed any!

I am not rich myself but I still try and make giveaways on a regular basis and luckily loads of nice people here do that too!

But yeah....started a blacklist myself. it's the only thing you can do.

i want the witness

I encountered quite a few like these by now. Myself only won 1 and gave away over 40, some still unclaimed.... =_=

so why L0 ga ?
wheres the logic here ?
and you are registered more than 2y ago...

Nope, don't reroll. That's not a valid reason to reroll. And also, no need to blacklist him. He may be just a poor guy/girl that doesn't have money to buy games to give away. Consider that before "hating" on him. And if his private profile is a problem for you, then ask him to make it public just for a few minutes for verification purposes. ;P

maybe you should add L1+ GA?

As it was said by many people: its not an acceptable reason.
In the future you can just create your GA with some minimum level. Lvl 1 means basically gifting anything (usually some random bundle key). I personally went for lvl 2 for the last few months as it requires some reasonable participation (while still being affordable) and also limits number of issues with people not marking gifts as received in timely manner.

I think you should start making levelled GAs
if not for the group, I usually put level restriction on my GAs, but not always
your situation - won 66 ($681) vs ZERO is not that bad, believe me

It is in my books, but that's why I'm not the one running sg ;)

maybe you should use sgtools for having won no more than x games or a giveaway:won ratio if this bothers you. pretty sure it lets you have a rule for things like this.
http://www.sgtools.info/

It might require you to make the giveaway private and use forums to link them, though... I didn't look into it much

Well, you have to accept that this might happen when you create public, level 0 GAs.