My latest upgrade to my digital life is Foxmarks, which synchs all your bookmarks so you can use them on any computer - and (the reason I went for it) on the iphone.

The iphone application (web based) is simple and nice.  It fixes an annoyance I had with not being able to synch my bookmarks on firefox with my iphone.  (Sure there is del.ish.us, but I never got into that).

This will also fix an annoyance I've sometimes had when being issued a computer for use at RSG and not having my own bookmarks on it.  Or going to a friends house and using their computer.  I think you just go to my.foxmarks.com and logon, but I haven't tested this part of it.