Screen Name should probably be taken out and made into a seperate table. Users may have more than one.
See
http://jongriffin.com/static/openacs/acs-person/ for some ideas (although most of this should be rolled into the core and I do have upgrade scripts for both Oracle and PG).
This was discussed before but it may have only been with Jeff D and Don. I don't remember. Anyway acs-person is deprecated.
