Good points acrylian, I am trying to not talk about plugin functionality on most CMS's, because then you could probably claim that every CMS could basically do everything. Zenphoto is kind of a special case though, and I hadn't exactly figured out how to treat Zenpage. I suppose I'll make some revisions to mention it soon.
As far as Community vs. Open Source... I did mention that its open source, I guess my train of that was that not all open source projects are community-developed sorts of things. A lot of commercial projects are now open source as well. Open source just basically means that the source code isn't hidden and can be modified, correct?
lol, oh yeah... actually my site is on there (sheepish grin) JesseSutherland.com, its mostly a Wordpress site, but the photo gallery is driven by Zenphoto. Which I'm a huge fan of.