How to export your library
We’ve greatly expanded your export options for Delicious Library 2. You can now export to these formats: Bookends, Bibliography, Excel, Tab-Delimited, and XML.
To export your library:
From the File menu, select Export > Export to Another Application.
Select which format you wish to export to.
Specify the details of the export (which items, exact format, location to save file to, etc.)
Click Export…