I dabble in all sorts.
By trade I'm an Embedded S/W Engineer at an R&D facility of a well known Consumer Electronics Company. Currently work on the middleware for Set Top Boxes, DVD recorders, Personal Video Recorders etc. Get a real kick developing gadgets for the masses...
So what am I doing messing with TW you may ask? The Project Management aspect of my job often finds me looking for better ways of disseminating and sharing information within our company. TW is one of a couple of OS projects I have adopted and wouldnt part with.
Also have an instance of TW set up for the residents association of the housing estate I live on. It's still in its infancy though. Should get some interesting and perhaps useful 'dumb user' feedback for the development community.