This does work in RC3, but the same glitches that I reported earlier reply. Here they are again:
A few things i have noticed :
1) I can not add any text after the tags.
2) There should be no space between the tags and the text/link inside the tags.
3) If I add text inside the tags I have to make sure there is not a space at the end of the line.
4)Must refresh after quick reply in order to reveal hidden text/link.
5)When switching to threaded or hybrid thread modes, it does not reveal either.
6)Links will often unphrase thereselves, such as
www.yousite.com will become [url=www.yousite.com]www.yoursite.com[/url ] The best way to avoid that is by making it a non-active link.
Is this hack broken...no. Are there alot of glitches...yes