I had another think about the plugin. Theres a couple of things that came to my attention, they may have been thought of already, but here goes.
Security: I checked out the site and noticed only logged in users can add links. A good thing I believe. However, can the links be edited by the user at a later date? I think this would be handy as if the company changes their details the user can update the information. Doing it this way would save the email to the admin. Is there a way of having only the user and the admin being able to edit? This would stop others (maybe competition) in the group changing details.
Adding a link: Is there a way to stop users adding their own catagory, this would stop random un-related company's adding their details to the contacts list, I have this problem with my own geeklog site sometimes - not a big problem, but it would eliminate having to check through the sections as much.
Just my 2 cents worth again,
noke
http://www.worldclubdjs.com