
Probably fake judging by "How to hack sites" at the top
i can confirm that this actually happened
it was a glitch with the log in system. you could make an account called "ROBLOX" with 100s of a certain ASCII character, and then put any regular letter at the end. when you logged on with the account, it would cut off the name to the maximum letter count (which was like 20) and it would log you in. if you did it right, and you made an account called like "ROBLOX****************************************************a" and logged in with it, it would cut it off to be "ROBLOX***********", and because of a glitch with the character, it would think you were logged in as "ROBLOX."
the hacker also deleted the rules and all the stickies and there was an uproar in the community over the fact that the guy who originally wrote all the stickies (which many robloxians found very entertaining) had already left roblox. while the login glitch was being exploited, the roblox staff like emergency shut down the entire website for more than 24 hours until it the glitch was fixed.
they also issued an apology on the matter, but it's since been deleted.