More on mashups

Tried looking at Google Mashup editor but it is currently restricted to beta testers, which is a bit of a shame as it looks interesting. Skimmed the article "Mashups: The new breed of Web app" and find myself regretting I've let my reading on the latest web technologies slip. I'm still stuck at an earlier stage of web page creation, circa 1996/97 where javascript and animated gifs were still a big deal. But then I remember creating web pages in text editors pre XHMTL and CSS. The integration of different sources into web pages is an exciting development for knowledge industries.