The site was founded with the idea that Black singles looking for dating opportunities should have a place that makes the search for love easier.
Each day thousands of Black singles visit in search of singles in their area.
'All accounts for users that are under the age of 13 are set to only communicate with friends.
Only friends in the approved friend's list can personal message, invite another user into games, or to join a VIP server.
Online social gaming platform and mobile phone app Roblox was launched in 2006 and has more than 30 million players across the world.
The game involves a user-generated set of virtual reality worlds, where youngsters can create their own characters.
Ms Casey from Fife in Scotland, deleted the app from Morgan's i Pad upon discovering the series of messages. 'It's frightening that a total stranger can send messages like that to young kids without being stopped.'I'm disgusted by what I've seen.