Alright so my YGP campaign ended with the following stats:

Somehow, less than half the traffic YGP claims to have sent its way have actually reached the destination site.
A lot can play a part on it.. adblockers, slow connections etc.
Also I'm getting a larger amount of invalid clicks, maybe the reason is that people in more advanced countries tend to use mobile devices more than actual computers..

The good part of it is that I also got 2 referrals out of which one did actually earn me something.
I'm running a banner advertising campaign using their banners on BoB and TrafficG.
TrafficG delivered 11 clicks out of 100,000 impressions.
BoB delivered no clicks out of 23,900 impressions so far (the campaign ends at 100,000).
I'll keep you up to date with it.