Our latest Google News Lab's visualization (see the entire series and read about them) is pretty meta-referential: Designer Anna Vital's The Visualization Universe reveals the search interest for visualization books, tools, and charts.
FastCo Design has just published an article about the genesis of this project. As usual, I didn't do any hands-on work myself; I only provided some general art direction. We wanted the result to be pretty straightforward, so Anna used mostly stacked bar graphs and sparklines.
On the opening screen you can select one category and see a ranking that you can sort by name, overall search interest, or change in comparison to last year:
Clicking any icon will reveal more details:
If you notice that something is missing, you can contact Anna through this form or send her an e-mail.