cool Dan, the G-Calendar feature will improve my use of biznik.
I don't know if you are familiar with Saul Wurman's Information Anxiety 2 Book. In it he outlines his LATCH organizational schemes - Location, Alphabet, Time, Category, Hierarchy. Each member could be easily assigned a value under the first 4 of these headings, time being how long they have been a member. Then if you put together some sort of sort page with the options under each as a drop down menu any member could slice and dice the membership.
You could use Hierarchy for different classes of members or for geography in which case Location could be the city.
Its a cool book and maybe one for the book club.