Own bookmarks get more important in daily life and this is why there are many different web services which try to help the users to organise and backup their bookmarks.
Stumbleupon, del.icio.us (owned by Yahoo), mister-wong.de , digg.com or Furl and many others areweb services like that.
Social bookmarking is a method for Internet users to store, organize, search, and manage bookmarks of web pages on the Internet with the help of metadata. In a social bookmarking system, users save links to web pages that they want to remember and/or share. These bookmarks are usually public, and can be saved privately, shared only with specified people or groups, shared only inside certain networks, or another combination of public and private domains. The allowed people can usually view these bookmarks chronologically, by category or tags, or via a search engine.
Personally I decided to use none of the above, but a slightly different solution. Its called SiteBar. SiteBar is a free online bookmark manager.
SiteBar is available as open source software and can be installed on your own server or it can be used by a public server similar to other Social bookmarking services on the net (Stumbleupon, del.icio.us, etc.)
It features sidebar integration into web browsers Sitebar Firefox-Plugin (Extension) that enables you to access SiteBar right from your web browser.
(Sources:)
michaelvanputten.com
4sysops.com
pcmag.com
wikipedia.org