Social network systems
In addition to my main needs, I may want to create a social network site to promote another business activity. So I am keeping an eye on specialised cm systems, installable and hosted, that might work for this purpose.
Installable
Elgg is big in the UK.
Hosted
Ning looks like the main player, with Marc “Netscape” Andreessen (sp?) behind it. I’ve created a site for sailors to play with.