I'm testing a new site like adf.ly and linkbucks where you shorten an url and share this link to the public. Everytime some one go to the link, they will first see an ad in a few seconds before they can access the content they were originally linked to.
Many claim it's a scam site, well I don't know about that and that's why I'm testing. It's also interesting to see how they react to PTC traffic as they don't have frame breaking code at the moment. Another site that started like that with high paying rates was adf.ly and it's still paying but now with frame breaking urls and lower pay rate.