Its clear to me now. I am a member of an obscure sub-culture of 3D printing geeks. At first, it was completely foreign – obscure websites and wikis… the “rare air” of the web. But now its feeling a bit like home. Sure things are either an unfiltered mess (Thingiverse.com), or the uber-organized, programmers dream (github.com)… but I am getting used to it.
A quick, oversimplified comparison/contrast: GitHub vs. Thingiverse: