Constant Content

What if we were writing reviews particularly products such as computer games? What is allowed and what isn't? That's pretty vague but it was only an imcomplete idea in my head anyway...

Maybe a refresh of a link to the actual rules and regulations out here? I can't find it today for some reason and I haven't really looked over it and it's been awhile since I wrote anything out here (I have a few other things I'm working on right now not to mention it's gardening season and well that takes up all other time pretty much).

Thanks a lot for any help.