Thanks for the warning!
For any future GRE takers who were thinking of risking the link above, I wanted to remind you that all of what you need to know for the GRE can be learned from the four practice tests and your undergraduate course material. A reasonably accurate (but with a few errors) set of solutions for the four practice tests is available here:http://grephysics.yosunism.com/ans/all- ... s_list.php
If your background is deficient in one of the areas covered on the exam, then you should track down a resource that covers it... there are even books out there about data/error analysis and lab methods.
Finally, for anyone who wants a set of physics problems, all of the general physics books out there have a good variety of problems that'll help for the GRE... Another glut of problems can be found in Schaumm's pamphlet, it has 3000 with solutions...
Anyway, my point is, don't invest too much time with risky, spurious resources like the link above.