Gold members are given the option to either select the cards without creating an account or create an account for additional benefits. Account holders with a Tango card can cash out for significantly higher merchant amounts and they can also choose to send their earnings via email to family and friends as gifts/ donations. There is no additional fee for eCards. Prepaid Visa cash cards are processed by Swift.
I belong to almost all of the sites you listed and out of all the surveys I take I don’t qualify for 95% of them. I will spend 15 minutes with generic questions with them collecting information about me then when done they say I’m not eligible for the survey or they have reached the required amount of people for that research. I can understand the reaching the required amount of people but I would think I would qualify for at least 1 or 2. It’s really discouraging when you take all that time to do the survey and not even get any points for doing so!