Use a Web Map as your bookmark manager.
 Save Links for Later
ReadWriteWeb: 6 Great Tools to Save Links for Later
 Netvouz XML Export
Netvouz allow you to export your bookmarks in a proper XML format.
Import Browser Bookmarks
Import Web Browser bookmarks into a Web Map. Folders will be mapped into simple items containing the items for the bookmark with the corresponding link and comments.

Surf smarter with your bookmarks online