O'Reilly Radar > Book Sales as a Technology Trend Indicator

O'Reilly Radar > Book Sales as a Technology Trend Indicator:

"Apart from giving us some interesting technology trend indicators (C# is gaining on Java, python is gaining on perl, InDesign is eating Quark's lunch), the data may also give us some intriguing insight into other economic factors. For example, might the increase in sales of books on QuickBooks and Excel indicate a rise in small business activity?"

As interesting as the article is, it was even more interesting to see that they are using flickr for the image in the article. Clicking on it takes you to flickr. Cool.