There are a ton of GPT+PTC sites on the web, but a certain number of them are very similar. Insiders In likes to call these sites Windrunner sites. These are sites with different names, but have very similar earnings and site design.
Ways to make money at Windrunner sites are clicking on PTC ads, clicking on PTR ads, promoting the site PTP, clicking on PTR emails, click exchange, referring others, joining new sites, and completing in weekly contests.