I wrote sometime ago that Google’s Browser Sync was going to close at the end of 2008 (actually 6th January 2009). It will be missed by those of us who used it. No use crying over it now but what will replace it for you?
After a bit of research I found Foxmarks. Originally it only synced bookmarks but the latest version, only for Firefox 3 not 2, also syncs passwords. This makes it a valid replacement for Browser Sync.
In fact it has a few features that make it better. One is the online review of your bookmarks. It shows you a history of when you last updated a bookmark and the last time you visited the site. Useful when you want to clean up your bookmarks.
So if you left finding a replacement for Browser Sync until the last minute have a look at Foxmarks.