If you work across two or three different computers then you'll need someway to keep track of all your bookmarks and make sure you've always got them to hand.

If you use Firefox, then Foxmarks is the best solution I've used. Simply signup to the Foxmarks website and all your bookmarks are uploaded so you'll never need to be away from them again. From now on, whichever computer you have Foxmarks installed on will automatically synchronize with it so that your Firefox browser has exactly the same bookmarks between different machines. The program asks you when synching whether you want to delete or overwrite your current bookmarks. The great thing is that you don't need to do anything after that - Foxmarks keeps you constantly updated with the right bookmarks. Your bookmarks are always backed up on the Foxmarks website in case you have any crashes on your local machine and it doesn't conflict with any other firefox extensions. The only annoying thing is if you leave it in synch mode and sometimes when you want to close Firefox, it won't do it until your bookmarks are synched which is a bit frustrating if you are in a hurry.

A brilliant extension that means you don't have to constantly worry about your bookmarks across different machines.