RewardGamer is to be avoided.
Most( Maybe all) offers on it are fake or spam. A lot of sites have these "Free" offers, avoid ALL sites with "Free" offers. Usually you'll be paying the price not in money, but in spam.
Chances are that if you do a offer, you will receive one( Possibly multiple) of the following list:
1. Spam in your inbox( Unfortunately, in the first couple of days, you will have to unsubscribe to HUNDREDS
of spam E-Mails.
2. Spam delivered in the form of text-messages.( These can be annoying, because most do not let you unsubscribe.)
3. Your private information:
Social Security Number
Work Phone Number
And Many, Many others!
These WILL ALL be sold around the world, this is why you get the spam in everything.
NOTE: If a site does not have a " We will not sell your information to any third-party without your consent" AVOID THE SITE OR COMPANY ENTIRELY!
This is from mine, and others' experience.