(last updated 2012-09-12) Resource Identifier (RI) Scheme name: skype Status: provisional Scheme syntax: skype:[?[add|call|chat|sendfile|userinfo]] Scheme semantics: Launching Skype call (unofficial; see also callto:) Encoding considerations: Unknown, use with care. Applications/protocols that use this scheme name: See official documentation from Skype website. Interoperability considerations: Unknown, use with care. Security considerations: Unknown, use with care. Contact: Registering party: Alexey Melnikov Scheme creator: Skype Author/Change controller: Either the registering party or someone who is verified to represent the scheme creator. See previous answer. References: http://en.wikipedia.org/wiki/Skype, http://www.skype.com/share/buttons/advanced.html (file created 2012-09-12)