I tried Roblox because all the talk on the Blockland forums about it made me curious.
Nothing personal, go play what ever game you want, but I didn't like it. I just find Blockland easier and more enjoyable. But mostly I stopped playing because most of the community was driving me crazy and I got banned for saying "f$ck". Yes, I took the time to remember to sensor it as to not violate the no cursing rule but they still banned me for three days.
Back in 2006, my brother went crazy in roblox and kept saying forget when there were a lot of people in ther server/place. I told him he'll probably get banned, so he sent an apology message to the creator of the game. He got a reply, and it said something like "You did violate the rules, but I guess I could make an exception. I can see you like roblox, and you don't want to get banned. Just don't do anything like that again, okay?".
Now you get banned for the slightest thing.