It's been a while since I've updated this thread.. but now is a good time since I've noticed a really good offer that I would like to share..
There is a PTC ads package on Clixten.info that has recently been added and I'm not sure for how long it will stay there :
1.000.000 PTCs at the price of $100!
Doing the maths it means that they charge $0,0001 per click ($1 per 10.000 visitors) and from my experience with the site they deliver 2500~3000 visitors per day. It is perfect for my site (< $0.003) so I've just purchased it and I'm already running it for my ads page.
So based on my average daily visitors so far it will keep bringing traffic to my site for the next 10 months.
And they are currently running a
points contest as well so if someone is interested he could combine the offer..