It's unique in what it does with creating trainers (which is a new way to cheat with video games as I certainly never heard of a trainer when I first signed up here). I can't really say that Cheat Happens is the best as right now it feels like the trainer business is in the Pioneering state right now. If anything, it feels like this site is more of a founding in this form of development. I predict that other sites will eventually get up and do the same. I'm not really sure about the future of the site though and sometimes worry if it'll get to a critical point where the current staff cannot keep up with the demand anymore and cause the site to plummet into a dark age sort of thing.
As for the user base, there are two of them. The social aspect which most people know and the trainer aspect (which is extremely different interaction than the social base). The social base has become into a tightly knitted community which is fine but has a lot of cliques that start up trying to do some radical thing which seems silly or stupid and ultimately either end up failing through self-collapse or because mods have to stop it. The trainer base of the site is extremely unstable and really volatile. The main problem is that 90% of them never really read the Forum Rules and the Terms of Service before they sign up and expect the service to cater to their every whim. It's just a classic case of people not lurking before they post and it's an absolute nightmare.