An excellent list to consider, check out A Librarian’s 2.0 Manifeso over at the Library 2.0 blog.

• I will avoid requiring users to see things in librarians’ terms but
  rather will shape services to reflect users’ preferences and
  expectations.
• I will be willing to go where users are, both online and in physical spaces, to practice my profession.
• I will create open Web sites that allow users to join with
  librarians to contribute content in order to enhance their learning
  experience and provide assistance to their peers.

Any of this sound familiar?  There’s a lot more where there came from!