My public LCARS GUI project already has some science apps, and the development version generates schematics, using its own specialized markup language. So some tidbits of information I find on TrekBBS, not only related to Star Trek but also to science in general, end up contributing to its content. I always keep my eyes open for the unexpected discovery or just something that gives up a good idea. Sometimes it's just finding out that I had some small detail wrong.
Before joining, I had heard the term chat room but didn't really know what an Internet forum was. I did some searching to see if there were any related to Star Trek, found some dead ones, then read about TrekBBS on Wikipedia, actually, and looked around quite a bit before actually joining and making my first post.
My contribution to the board overall is small, since I rarely watch TV (Trek is an exception), but I do like to at least look in on the Science and Technology board, now that there is one.