In addition to my Amigas, I also run Mac OS 9 on a G3 (seems I can't be bothered with a modern OS that's still supported, grin). Here's the fun part, there are many more sites that refuse to open on the antiquated versions of IE and Netscape that will still run in OS 9. Those same sites are usable in Ibrowse (perhaps not rendered perfectly), but they don't refuse and tell me to upgrade or use their browser of choice.
I've been using Ibrowse since it first came out and like it's bookmarks over Aweb's. I haven't upgraded to 2.4 yet, though.
Note to Amiga browser developers: Please don't give up, I appreciate your work!