yup. exactly the same thing here. Now that chuff and rong are gone I have less need for it. More than anything i've just been hiding threads I know I'll never read so it helps keep the front page clean.
I pinged froodish but his last post was november of last year.
Instructions about editing the killfile are wrong as Greasemonkey now stores those settings in an SQLite DB along with the script in your Firefox user profile so I'll have to update those instructions in the wiki.