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)
Most of the surveys on Inboxdollars actually range up to $5.00 on surveys depending on the survey provider. Please note that InboxDollars works with Market Research companies (survey providers) who create, provide, manage and credit the surveys. InboxDollars does not make any requirements or qualifications for a survey. Each advertiser may be looking for a particular demographic to get the information they need for their services/products/etc so they will have qualification questions when this occurs. Our minimum requirement is $30.00 as a minimum and members can get there pretty quickly if they do a variety of activities on the site. We have some members who cash out once a month but again this is due to how often they are on and how much they do.