Google has released a tool for syncing information like bookmarks, history and persistant cookies between multiple copies of Firefox.
Google Browser Sync for Firefox is an extension that continuously synchronizes your browser settings â including bookmarks, history, persistent cookies, and saved passwords â across your computers. It also allows you to restore open tabs and windows across different machines and browser sessions.
While this is a extremely appealing option for many, I think the overwhelming concerns about privacy with Google will out weigh its use.