Giving the kick-off presentation at Monday's Mashup University portion of this week's Mashup Camp 4 was an Introduction to Mashups from expert "masher-upper" John Herren. From the look of John's slides posted on SlideShare it was very good general introduction to the topic. Herren used the notion of a Mashup Pyramid, shown below, as a means to visualize and structure the talk and this space. The pyramid builds from data feeds to APIs to code libraries to GUI tools to platforms:
See David Berlind's post for some photos from the first day at Mashup Camp including John's talk.