The other shortcut I take -- I'm basically lazy -- is to make the user create their own bookmark to the database. Since there isn't a user ID associated with the file I don't see a reason to create a separate location document. Anyway, some of my users are even lazier than I am, and refuse to use anything so fancy.

David Gewirtz is the author of How To Save Jobs and Where Have All The Emails Gone? For more than 20 years, he has analyzed current, historical, and emerging issues relating to technology, competitiveness, and policy. David is the Editor-in-Chief of the ZATZ magazines, is the Cyberterrorism Advisor for the International Association for Counterterrorism and Security Professionals, and is a member of the instructional faculty at the University of California, Berkeley extension. He can be reached at david@zatz.com and you can follow him at http://www.twitter.com/DavidGewirtz.