An interesting presentation on  design criteria for social web sites, with discussion of how the multiple facets of identity are not supported in most online social networks.  The presentation is interesting both from the directly applicable design of groups/roles and the discussion about how to handle attributes and information flow within social web sites.

At the same time we see an interesting uptake in the use of social web sites and channels to discuss (and cut the lead time of scientific discourse) things like Analysis of Vinay Deolalikar’s recent preprint claiming to prove that P != NP.

SURFnet published a video on how the Dutch research network is proceeding with its innovative Collaboration Infrastructure project COIN.  This work is a synergy of federated identity, social networking and collaboration tools.