Link: Official Google Blog

I use Firefox at work (probably a bit more than I should) and I hate the fact that when I get on my home computer, I have old bookmarks I haven't updated in months, a different homepage, and several websites that I can automatically log into at work, but have to remember the password at home. Google is bound and determined to change that:

Google Browser Sync unifies your bookmarks, history, saved passwords, and persistent cookies across all the computers where you install it. It also remembers which tabs and windows you had open when you last closed any of your browsers and gives you a chance to reopen them. We think you'll enjoy how it handles sync conflicts and "just works," enabling you to bring your browser with you everywhere.

I've already installed the plugin and I'm using it now. Some commenters over at Lifehacker seem to be experiencing some problems with it, such as bookmark storage not being organized in exactly the same manner. I'll let you know what I think after I've tried the sync at home tonight.