Assisted the Solutions Health Collaborative move from a Community Server platform to a WordPress site.
The ubiquity of public, commodified social networking sites changes the value proposition for non-profit inter-organizational networks and coalitions. Those that simply want to share resources and publish news are well served by WordPress, Facebook organization pages, and others.
Others may continue to offer a more secured, robust environment. My recommendation is Sueetie ‘the social network you own’. It is open; offers a rich free version; and a premium, low cost commercial one with even more features.