Once in a while a widget/app/gizmo comes along that is so dang useful and cool that I simply must share. Foxmarks for Mozilla Firefox is one such plug-in.

Foxmarks is a nifty little cross-platform extension that will both backup and synchronize your firefox bookmarks. This is ideal if you work on multiple machines, and even across multiple Oses

http://foxmarks.com/

If you are a Firefox users and have multiple systems, simply put you need this Extension – Enjoy.