Hi all,
In the good news department, we now have pages on Twitter, Facebook, and Google+. I'm working on LinkedIn but it appears that I need some people to confirm connections before I'm allowed to create an organization page. If I sent you an invite then please accept it, if you didn't get an invite but would like one please email me or search my legal name on LinkedIn.
My understanding is that Wikimedia organizations have found in their experience that Facebook is the most useful for organizing events. My experience with managing the SeaFOSS account is that I have a number of followers of low local relevance but good subject matter relevance. I'm hoping that WMF Communications will have an office hour sometime in the next several weeks in which we can discuss WMF and thematic organizations' goals and strategies around social media. As one of our board members has told me, social media can become a time-sink with little meaningful benefit, so we need to choose our goals and strategies wisely.
I will update everyone when I have the LinkedIn account active, and I will order the generic business cards for us once I can place links to all four pages on the business cards.