Mozilla is introducing Weave, a service that synchronizes your Firefox data (Bookmarks, preferences, customizations and passwords) between multiple devices (desktop, laptop, mobile). Weave is currently in its 0.1 version, so you can expect a few kinks here and there. It should look a little like Google Sync, but I hope that it will end up being better. Google's sync is nor perfect, some deleted links come back and so on. It is mostly OK however.