I´m the guy behind opendesktop.org, gnome-look.org, kde-look.org and a few more community sites for free software.
I noticed the there are a few good sites for inkscape content but not a real community website for all content types and a real social network. So I created http://www.inkscapestuff.org
It is a community site where users can upload stuff and other users can download, discuss, rate and subscribe this uploads. You also have community functions like messages, friends, microblogging, groups and more. I did this for a few other free software projects and I think this can stimulate the community and attract new contributors.
There is also a public api where you can access the content via a REST api. Check api.inkscapestuff.org.
What do you think?
Please send me an message if you have ideas to improve the website.

Cheers
Frank