Dang, I was gonna review this... Looks like you beat me to it. I guess I'll just add to it then:
I bought this as an anniversary gift because I thought the whole thing sounded boring and my boyfriend would enjoy it more than I would. Little did I know that once we were online I was playing it more than he was. I usually play with Dark, and the headsets help. I wouldnt actually recommend some of it for kids because my brother and I swear a lot. So we dont like it when little kids play. The rating definitely changes when you go online, though levels are monitored for content. Still, I have a wicked potty mouth.
The controls are a little loose, especially for accurate jumping, but it cant all be easy. Sometimes I find the levels more creepy than cute (a skulldozer threatening to mow me down isnt cute) but it's very stimulating and challenging while still being fun, and most of the online community is really friendly and helpful (unlike those call of duty players than whine about how everything is unfair). Once a stranger was trying to haul me off a cliff, but I didnt care too much. How can you take a game seriously when you're a tiny little cute lion?
I havent tried making a level, but it will definitely involve rocket cats. How can it not?
Have to say i dont allow the kids online simply for that reason alone.. its difficult to control the language at times.. even for me as a parent. But the online community for LBP is masive and also so very friendly usually open to requests for help on areas you may be stuck or extra support for those sections that require more than one player.
Add to that, some of the levels being created are just mind blowing... the scoring and tagging systems works great allowing you to quickly find those levels that really are nothing short of amazing.