This is absolutely a fantastic tutorial on Skype which goes beyond functionality and looks at applicability by Community of Practice expert  John David Smith.

You probably already know that Skype is a great tool – especially for community leaders. If you are a technology steward, it’s not only a great tool but it’s also a handy example for illustrating some of the use and integration issues that we have to deal with and be able to talk about.

Reference:

• Skype as a community platform | Digital Habitats: stewarding technology for communities | John David Smith | 14 March 2010