eg Just typing the username will post it as plain text, but [ RedRum ] would hyperlink it to my profile.
I added in the spaces so it didn't get confused with ordinary tags like [code] etc.
It will not hyperlink unknown usernames so you could do:
[ RedRum ] bla bla [ OSDASD ] bla [ Jagerman ]
....and only RedRum and Jagerman would hyperlink.
Attached is the plugin, I'll see if I can get Alex to add it to their server (again )
This was requested by perlguru.com but Jasmine won't mind me sharing it (I hope) as it is a free plugin.