1. Facebook Statistics. [
http://www.facebook.com/press/info.php?statistics
]
2. Twitter Statistics. [
http://www.forbes.com/sites/oliverchiang/2011/01/19/twitter-hits-nearly-200m-users-110m-tweets-per-day-focuses-on-global-expansion/
]
3. Kent Anderson: Scientists Use Social Media. The Scholarly Kitchen. 2008, [
http://scholarlykitchen.sspnet.org/2008/08/14/scientists-use-social-media/
]
4. About Labspaces. [
http://www.labspaces.net/about.php
]
5. About Surgytec. [
http://www.surgytec.com/aboutus.php
]