On becoming a member with any of the online paid surveys you will entitle yourself to a number of advantages. These include:

When you return to the site, the welcoming introductory text won't be flashed until you    log in. Hence returning visits become a lot more exciting since then you will not have to    scroll through the already read text once again.

As a registered member you are allowed to post messages into the forum. You can    also submit user reviews if you want to. Theses messages and reviews though can be    viewed by every one but they can only be posted by the registered members like you.    So isn't that quite an interesting advantage that Free Paid Surveys highlights!

Thirdly, you can be assured of the fact that none of the information that you provided    during registration will be wrongly dealt with. In fact all they will ask for is a username,    an email address and a password. All the extended information other than these basic    ones is absolutely optional and you can answer them or not, just choosing that    according to your own priorities.

As the Free Paid Surveys mentions, a "not rated" site simply means that a particular site is not rated, that's it! But then this is not just similar to a zero rating which obviously would mean that the site is dreadful enough to have no rating information entered for it.

Aside to that there are a number of factors that may be responsible for the absence of a "FPS Rating" for any site. It may be possible that the administrators of the site have not just got the time to enter it yet in the first place. The Free Paid Surveys also mentions that for a new site to have an evaluation it needs to be the member of an evaluation portal for some time.

Free Paid Surveys suggests that in order to be able to add "User Review" to a site you    first have to go to some survey directory that has all the sites you want to review    registered in there.

Choose the particular site you want to review and find out the tab named "Full Details    and Reviews". It contains the link to the site. There on Free Paid Surveys ask you to go    on to the detail page where you will find a particular link to adjoin a site review. This is    the User Reviews section that you will post into.

But then Free Paid Surveys also reminds you that you can review just once for a single    site. So it would be better for you to go through the User Review Posting Guidelines and    Policies in the first place to be on the safer side.