hi Kirk - I visited the Sept 11 memorial pages, and found them very moving. This is a very appropriate use of Wiki in the wider community. I particularly liked the fact that you made it possible for people to "leave flowers".
I think the people who contributed to the pages also will have been helped by the opportunity to do so.
Although the memorial site is down, YpsilantiEyeball? is a community wiki that runs usemod.
check it out at: http://sknkwrks.dyndns.org:1957/writewiki/wiki.pl?Ypsilanti_Eyeball