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!
In a few cases, InboxDollars directed me to “exclusive offers” instead of straightforward surveys. One required me to give my name, address, phone number and birthdate to earn money and enter a sweepstakes for a Target gift card. Another time, I was prompted to give my email address and choose between Coke and Pepsi in exchange for $1 and a sweepstakes entry. I didn’t want to give my contact information to what appeared to be third-party sites, so I clicked out of these promotions.