I use multiple computers, one at home (Mac) and one at work (PC). Both are laptops, both I own, both I leave in their respective shrines. I take them out when needed, but put them back right after. So clearly as a Firefox user, Google Browser Sync was a God-send. Well, until Firefox 3 came along. For some reason, Google isn't updating GBS for Firefox 3.0 anymore. So, upgrade to Firefox 3 or stick with GBS? I finally took the plunge when I found out about Mozilla's Weave. I hasitated a bit because it was an early prototype. Essentially it's the same good service: syncronise bookmarks, passwords, form data, history, and cookies. All encrypted on a central server. I don't recommend services such as Foxmarks and others that only sync your bookmarks. Seriously, if you already use del.icio.us, syncing bookmarks isn't too big a deal. What I really wanted is to remember sites I visited at home, and continue on them at work. And passwords too. I trust my browser a lot. =) So if you were looking for a replacement to GBS, Weave is a good alternative. It has worked well so far... all 15 mins of it... and I think Mozilla has done a great service to the community to pick up where Google left off.