Joe, Lightstalkers is still offline right now but here's a general description of the site
off google.
"Discussion board, contacts list, list of resources, populated mostly by international photographers, with some editors, writers, and agents.
Lightstalkers is a networking tool designed for mobile journalists."
Actually it has over 7000+ members and although its seems to have a core group of regular contributors who are are mainly photojournalists, it has many other media based members. It's very easy to browse the members' pages and individual networking lists are publically displayed making it easier to see who's who.
It has a very good resources section. A lot of editors source this site for quick contact with photographers for assignments and it's excellent for HU re international competitions and photo festivals.