why not have it even not even show the link at all... ie.. someone culd say <a href="irc://irc.someserver.domain.net/bleh/" target="_blank">irc://irc.someserver.domain.net/bleh/</a> ... but if u choose to it wont ever show the link on screen, let alone not let you click it. but also have it be able to be cached as http links are.
