No Skype!
<a href="//commons.wikimedia.org/wiki/User:Gamliel_Fishkin" title="User:Gamliel Fishkin">Gamliel Fishkin</a>
Own work based on: <a href="//commons.wikimedia.org/wiki/File:Skype.svg" title="File:Skype.svg">Skype.svg</a>  and <a href="//commons.wikimedia.org/wiki/File:Forbidden_sign.png" title="File:Forbidden sign.png">Forbidden sign.png</a>