I probably would have missed this post and this blog, even though I can now see about 4 points of possible intersection, were it not for the ever-valuable elearningpost (I love this feed, just wish that the descriptions came through with the titles and URLS in the RSS feeds as seen in the Radio aggregator).
There were at least a half-dozen ‘social networking’ or community building softwares that were new to me on this list. Some definitely worth checking out. There seems a real opportunity for someone to create a taxonomy of collaboration software and an associated list of features, and maybe start doing some comparative analysis of these packages? Or maybe someone is already doing this? – SWL