> a blender file exchange website (http://www.blendswap.com/), and
> other useful blender sites such as http://www.blendernation.com/.
Nice summary. Along with the above two resources, I'll add:
It's also nice to know about the main end-user (artist) support channel:
web forum-based BlenderArtists.org.
http://www.blenderartists.org/forum/
The Blender dev community -- including script development -- still uses
normal mailing lists.
http://lists.blender.org/mailman/listinfo/
RenderFarm is a nice BOINC-based way for free, open-source-based project
rendering/animation.
http://www.renderfarm.fi/blender