This page contains information about related social sites that are part of PublicLaboratory.org:
<a href="http://www.facebook.com/PublicLab">facebook.com/PublicLab</a>
<a href="https://twitter.com/#!/publiclab">twitter.com/publiclab</a>

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: <a href="https://www.flickr.com/photos/j-who/sets/72157625264749937/with/5176168622/">#GrassrootsNewark</a>.