I'm Rudy Patard, PhD candidate working in Life Cycle Assessment field. I started working with wikis recently with the help of Christopher Davis on Enipedia. (More here)
Needing more practising I created a wiki for task that cannot go online immediately.
In my works (and discipline) a lots of issues could be solved trough semantic wikis. (And I don't see any alternatives)
I'm also considering smw for personal applications. The smw seems indeed to bear huge potential for organisation (associations, syndication ...)