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!
Some features of InboxDollars are quite unique and not found on other paid-survey websites. Apart from the usual payment or survey taking, the website also enables members to read emails, sign up for corporate offers, watch videos, play games and generally surf the web in order to earn income. (For the record, InboxDollars isn't the only site that will pay you for playing games and surfing the web. Swagbucks is generally regarded as the best in the business when it comes to that kind of free money. Click here to read my honest review of Swagbucks)
Once you have accumulated up to 4,000 points you can request a rewards. In Hiving, 1,000 points is the equivalent of $1.00, which means that the minimum cash out is $4.00. Also, points redemption is only available in stages of 4,000. Thus you can withdraw only multiples of $4.00 (that is, $8, $12 etc). You can request your payout via PayPal payment.