While not technically a mashup, the theory is very similar - take two useful services and make tem work together with a minimum of effort - the result of which should be a better solution than the individual pieces.
In this case, it is also a brilliant method of marketing exposure.
Yugma Skype opens-up the door to [...]

I’ve been pondering the idea of desktop applications authored as mashups. the question becomes - what is the development environment ? You can run PHP, Perl, and other languages on a local machine but they really were not meant for that.  You could install Apache and Tomcat and have an HTML and applet environment [...]

Back in the 1990’s there was this idea of “network computers” - computers that did nothing without their connection to the network. The idea fizzled. Now we are on the verge of the “web computer”. Same idea but with better timing.
The emergence of Amazon S2 & AWS , Force.com, Facebook, and Google Apps & [...]