Prohibited Clicks and Impressions
Any method that artificially generates clicks or impressions is strictly prohibited. These prohibited methods include but are not limited to: repeated manual clicks or impressions, incentives to click or to generate impressions, using robots, automated click and impression generating tools, third-party services that generate clicks or impressions such as paid-to-click, paid-to-surf, autosurf, and click-exchange programs, or any deceptive software. Please note that clicking on your own ads for any reason is prohibited, to avoid potential inflation of advertiser costs.
Pixelotto is clearly a paid incentive to click site, which falls into paid-to-click.