Roblox is a great MMO or game, depending of what you do on it. There alot of games you can play. There might be a game for you on the site. It's easy making games. There are templates on the start page, toolbox, and online. It's also easy cause the programming language, Lua, is easy to understand and learn. There's an active community both on forums and games. You can make money of making games. However negativity stuff like sex/porn or bloody games, but do come once and leave. You have to note that game is built on UGC (User Generated Content), so what's gonna happen if you going to let anyone make a game, you going to expect some bad stuff. However, the moderation, while not perfect and small, can do it nicely. I think the only problems is that some updates do ruin and people breaking the rules. However, you can change settings to avoid this, and you can Roblox a better place for all people. It's a great place to play, make, and share games. It's really up to the parent.