I use Firefox as my primary browser on all of my systems, Macs and PCs.
I’ve been using del.icio.us as a place to store my links to things on the web that I’m interested in for over a year now, and that works great – plus I use a feed from del.icio.us to generate the list of “Recent links I’m Tracking” on my Recent links of interest and blogs I read page.
But I tend to use the browser bookmarks, particularly the Bookmarks Toolbar, for the pages that I use all the time – my Oracle Calendar web page, the Catalyst Tools pages, lots of UW pages, the All Music Guide, several links of mountain weather forecasts, my bus timetable, etc. One problem I’ve always had is keeping those bookmarks synchronized across the multiple computers I use at work and home.
Now I’ve started using Foxmarks to synchronize my browser bookmarks across instances of Firefox. Foxmarks is a Firefox extension that synchronizes bookmarks, storing the authorotative copy of your bookmarks on a server (I’m using the default foxcloud.com server) for the process. It’s not perfect (on one machine I had to manually force an overwrite of the bookmarks from the server before it took), but it’s pretty cool, and I find it very useful.