I'm famous on another account. I use this so that when people join the game, they dont scream and say "O NO WAI IT's (my real account)". That's why roblox hasn't made emails a unique thing.
Well first, if the user doesn't have any hats, items, places, groups, sets, ect and hasent been used in months, then its probably a user who made the account for 1 time use and there is no need for that.