Ok, ROBLOX is a great game, it can be fun an educational, though they seem to try to get all of your money. The game by itself is free, but there's a lot of extra benefits that are WAY too expensive. First, you can buy a "Builders Club" that can get you more ROBLOX money, and that costs $6.00 a month. Then they create a link where you can buy the virtual money with real money, starting at $10.00. Not good. Now, they have a "Turbo Builders Club" that will get you much more money, and 25 places to create. The most ridiculous thing they've created is "Outrageous Builders Club." I was "iffy" on every other builders club, but they're going too far now.
Some games can be violent/scary. The violent games are like "Lego Star Wars," but some of them may contain blood (red bricks, the owner created the blood. Not usually in games.) Now, scary games can contain ghosts, demons, and so on. Now, your kids have the choice to go to those games or not. They should know if it's scary before they go in the game. The bright side of ROBLOX is that it is educational, and it is allowed in many schools. Kids should definately be safe on ROBLOX, but make sure you don't give too much information away. Kids may curse and use innapropriate terms, but they can get banned right away. The ROBLOX staff gives you a chance, though, so you don't get completely banned right away. You just get banned for about a day. The second time, three days, and you can have the same amount of days more the once. It takes a lot to get completely banned, and if people are being too innapropriate and creating more accounts, they will IP ban you (Not allow you to get on ROBLOX under that internet connection at all, if you create another account or not.) ROBLOX is definately a fun game, but you have to be careful with certain things.