Early wikipedia adopters were mainly an elite group, however since 2006 the number of novice users increased steadily, gradually forming a Wikipedia community. Sociologists such as René König and Christian Pentzold have studied the practices of Wikipedians very closely, if you are interested in learning more about them. Their work led me to wonder who might be the pneumatic tube Wikipedians?
I have found one so far (and would love to know of any others out there!): Lyle Zapato, who writes about his additions to the pneumatic tube Wikipedia site, on a co-authored blog ZPi (see also his Inteli-Tube Pneumatic Tube proposal). On ZPi Lyle Zapato talks about clarifying ambiguous statements and adding pictures. He also moved a misplaced paragraph and created a separate section on pneumatic tubes in fiction.
For those interested in the backstage of Wikipedia you can see the Pneumatic Tube page in process by comparing L.Z's original fiction paragraph to the one now on Wikipedia, which has been expanded by other pneumatic enthusiasts to include works by Umberto Eco and Douglas Adams, as well as references to Ghostbusters and videogames. For an even sneakier peak behind the scenes check out the "Talk page" (that other little clicked tab on any Wikipedia article) to see discussions about terminology, better references, and keeping the fiction section to wikistyle.