I have been using the fader hack on my beta 1 site for awhile now at
http://bikeforums.com/v2/ Only logged in users will see the fader, everyone else will see the New User text... Also, for some reason, some unregistered users recive a javascript error, im still trying to de-bug it.
I'll probly remove the fader for my public version as IMHO it slows down the page, and i always use the get new posts feature, i hate waiting for the fader to show that line
[edit] Sorry, i took down my beta forum, as my main forum went live with v2, i decided not to use the fader hack in the public forum[/edit]