The US government just finished a report on Internet traffic that Congress requested seven years ago.
A 1998 law required the Commerce Department to seek a study about Web addresses and trademarks by the National Research Council and wrap up the report within nine months. Well, it took a little longer... but the report Signposts in Cyberspace: The Domain Name System and Internet Navigation is available (you may read the Executive summary instead).
MercuryNews.com, 3/31/2005, Panel finally finishes Internet study Congress requested in 1998.
Press release by The National Academies here.