YouData.com is the highest paying site I've found that pays to you click and view ads. You get paid two ways on this site, per impression and by click through. Be sure to do the click through to increase your earnings with the ad! Up to 15 cents per ad viewed! That's higher than I've seen anywhere. They pay by paypal, and they pay every Friday no matter how much you make. There's no payout limit.
The only PTC site I've ever found that's worth my time.
I've been paid 4 times so far. You can see proof in my blog.