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Zenbe is free email that works with the email you already use. Zenbe offers many features, including email, online calendar, lists, mobile sync, file sharing, team collaboration. It even works with Facebook and Twitter.

The problem with social networking services is that you do not control a social network, which can behave in highly unpredictible ways according to the theory of complex systems, especially if the strategic intent of its originator is not clear. For me, no human society, whether in the real world or in the virtual world, can survive without some form of visible leadership, i.e. someone who symbolizes what the brand stands for. I don't know about Facebook, and I honestly do not understand where it is going. But for Wikipedia, there is a big risk remaining faceless. In France, Wikipedia is said to be in the hands of the far left of the political spectrum, and manipulating content accordingly. It might be true or not, but if nobody stands up against this accusation, it might prevail in the end. Perception is reality.

myExperiment is a collaborative environment where scientists can safely publish their workflows, share them with groups and find the workflows of others. Workflows, other digital objects and collections - called Packs - can now be swapped, sorted and searched like photos and videos on the Web. And unlike Facebook or MySpace, myExperiment fully understands the needs of the researcher. myExperiment makes it really easy for the next generation of scientists to contribute to a pool of scientific workflows, build communities and form relationships. It enables scientists to share, reuse and repurpose workflows and reduce time-to-experiment, share expertise and avoid reinvention.

Many institutions, from neolithic villages to the maniples of the Roman army, seem to be organised around the Dunbar number.

While news from Iran streams to the world, Clay Shirky shows how Facebook, Twitter and TXTs help citizens in repressive regimes to report on real news, bypassing censors (however briefly). The end of top-down control of news is changing the nature of politics.