ClixSense is one of the best PTC sites. They are a bit stricter than the rest of the sites, in fact, you must be on the down until you spend certain amount of time you are required to stay on site. There are 4 types of income: first and main of course is to click the ads, the second to finish a given tasks, but they require a purchase, so if you are not willing to pay, do not go here, the third is to finish the assignments, and the fourth are some games, where every day you have a chance to earn $ 5.
Daily you can earn about 10 cents only to ads.
Minimum payout $ 8
Link to site is www.clixsense.com