The techniques and uses examined are mindmaps, displaying news, displaying data, displaying connections, displaying websites, articles & resources, and tools & services. This picture is an example from Time that the article used.
In ten years of watching entrepreneurs pitch their companies, I can recall maybe two companies using any of these techniques. Every other one either (a) used no graphics at all; (b) used a 2 x 2 matrix and guess what: they’re always in the upper right corner; or (c) used a matrix and guess what: they’re always the column with the most checked-off stuff.
If you like Smashing’s explanation of visualization techniques, you’ll probably also enjoy “45 Excellent Blog Designs.”