Findings:

• BtS (user)
• BT
• BT Internet
• BT Phone boxes
• BT Cellnet
• BT Together Local
• BT Global Challenge
• BT: Bus Numbering System
• BT: Sign Wars
• Bt corn
• BTS
• BT GetOutThere
• bt (user)
• BT Hater (user)
• .BT

If you Log in you could create a "BT openworld" node. If you don't already have an account, you can register here.