Why does some text in my BP profile show as links?

Does anybody have any idea why I have ended up with some of my text appearing as links on my BP profile page?

http://www.writers-site.com/members/joej/profile

This is a custom box I added to allow users to give some kind of bio, but nothign else has been added to it to make it act in this way.

EDIT
This was supposed to go into BuddyPress support, but for some reason, I clicked the wrong link.