According to The Guardian <http://education.guardian.co.uk/elearning/ story/0,,2116835,00.html> that describes Nature Network: <http://network.nature.com/> I would say it is very much at the early stages (several thousand users, less sophisticated than apps like Facebook and LinkedIn and has (as you might expect) a strong hard science bias. But I thought it might be worth noting for some of you... --- David Brake, Doctoral Student in Media and Communications, London School of Economics & Political Science <http://www.lse.ac.uk/collections/media@lse/study/ mPhilPhDMediaAndCommunications.htm> Also see http://davidbrake.org/ (home page), http://blog.org/ (personal weblog) and http://get.to/lseblog (academic groupblog) Author of Dealing With E-Mail - <http://davidbrake.org/ dealingwithemail/> callto://DavidBrake (Skype.com's Instant Messenger and net phone) Please access the attached hyperlink for an important electronic communications disclaimer: http://www.lse.ac.uk/collections/secretariat/legal/disclaimer.htm