YouData is a PTC site that is in a league of its own. YouData bosts the higest PTC ad payout and has a top notch referral program.
YouData sends you PTC ads that match your MeFile. A MeFile is data about you which tells companies which ads you would like. The more information you provide in the MeFile the more PTC ads you will get.
Insiders In recommends YouData because it is a site that is nothing like any other PTC sites.
Insiders In gives YouData 4/5 stars.