I just switched to using Phoenix (www.mozilla.org/projects/phoenix)
as my primary browser, and decided to go hunting for some extensions last
night. I hit gold: Linky (linky.mozdev.org/), the Mozilla/Phoenix
extension of my dreams.
With Linky, you can—among other things—select an area of text and open any selected links in separate browser tabs. And, with Phoenix, the default new-tab behaviour is to open each tab in the background. So, when I start my browsing sessions now, I can select the links down the right-hand side of this page and—with one command—open them all simultaneously in separate tabs. I couldn’t have asked for an extension to better match my browsing behaviour. (I actually use my own website as a bookmark list for sites I regularly visit).
I might be the only person I know who would get excited about this feature, but I thought I’d share it just in case.