I guess I should actually use this thing. For what purpose? Well, I have about 2000 tabletop RPG books between PDF and print editions and I should do something with them besides let them collect dust.
So how to review things that encompass a wide variety of stuff? Rules should be judged by how character creation works and then using the example characters as a way to look at how the system works. Plot and sourcebooks are going to be arbitrary, since they're very much a 'Your mileage may vary' type product anyway. All I can really do is talk about the good parts and bad parts as far as I can see.
To a lesser degree I play miniature games, and those might pop up here once in awhile too.