I use
http://murl.com for my bookmarks. That way I can access them from any computer and, if I install a Microsoft upgrade which blows away my operating system

I can still access my bookmarks.
I've been using this guy's product for years. The server uptime is unbelievable. You can mark your bookmarks public/private -- I make the ones that I want to share with others (like my medical-reseach and my job-hunting bookarks) public,
I download a copy periodically to my harddrive just in case. 'cause I did have one company years and years ago go out of business (this was a service that I paid for) so ...
Barb