Google Browser Sync
Having had computer problems in the past which have resulted in losing all my bookmarks, passwords etc, I decided to look for some way of backing them up. I use Firefox, and have found that you can now enable an export option to save bookmarks/passwords by way of adding in a simple extension. This was fine, but I recently found out about Google Browser Sync which is a firefox extension that not only backs up your bookmarks and if you like passwords to an online repository, it also keeps notes of the pages you had open and even your complete browsing history should you want it. This is a bonus for anyone who uses multiple computers since they can now have one set of bookmarks etc and even continue on browsing on one computer where they left off another.