Neobux is in my opinion one of the best PTC sites out there. They are honest and pay instnatly when you reach your cash out balance.
Most of the ads on this PTC site are worh .01 some are only worth .005 . I know this doesn't sound like much but over time it will add up. They also have a few options to increase your earnings such as the ability to rent referrals and participate in different drawings.
Sign up and give it a try. It only takes about 5 minutes a day to click and view the ads. See how quickly your free money can add up.