Nice tip.

At one point I used and loved Vimperator and then migrated to Pentadactyl, but ultimately got fed up with Firefox's bloat and memory management issues.

Same. I sadly used Chrome to post that comment, but I'll be back one day.

I'd recommend checking out Firefox Aurora (http://www.mozilla.org/en-US/firefox/aurora/) - Firefox is really looking great these day. The new native developer tools are coming along nicely and hopefully will prove more stable than Firebug.

There's an Arch Linux dev that maintains a custom repo with Aurora builds and matching Aurora Pentadactyl packages in the AUR, for those on the distro.

A quick search on "Heftig Repo" should bring up the correct results, and the BBS thread is here: https://bbs.archlinux.org/viewtopic.php?id=117157