After looking at some of the comments, I would have to agree that it is not a scam, but a huge waste of time if you don't get selected for a survey after giving opinions for upto 10-30 minutes.
Web Perspectives is another survey sites. Web Perspectives sends me surveys weekly and I receive a lot of surveys where the rewards are supposed to be $3-8 per survey.
Negatives: I have not made a single penny through their survey company. There have been many times when I have done the survey for half an hour and I get pop up saying that they were looking for some other group of people to survey. They have taken my opinions for a long period of time and haven't paid me.
There have been sometimes when the next page says "cannot be displayed" which could be a problem in my internet connection. This has happened multiple times, and I am not sure whether they are going to resolve their server problems anytime soon.
There are lots of other sites out there which don't waste your time and pay you even if you don't qualify for the survey. Take my word for it and spend time looking for better websites than Web Perspective.
Positives: Pays through paypal (free), survey rewards are high (if you are eligible)
My Rating: 6/10