social-media
Related social sites that are part of PublicLaboratory.org: facebook.com/PublicLab twitter.com/publiclab
Each wiki page also has "facebook share", "tweet" and "+1" links for you to share on your own channels.
There is no organization-wide Public Lab flickr account: everyone uses their own flickr or other site for uploading pictures and then tags them in a particular way for easy searching. See Jen Hudon's example: #GrassrootsNewark. Also see RJ's note on how to easily embed these images into pages and notes on this site.