Information Architects have made a Subway map for: Web Trends of 2007. The most successful companies and websites, including a number of my favorite Web 2.0 solutions, are plotted, categorized with color-coding and rated by size and popularity with stars.
Personally I like the way that have portrayed the data, in a clear and familiar symbolic design.

For the interactive version of the map click here.
In addition the company has attempted to add Web generation numbers. Ie. Web 0.5, 1.0, 1.5 and even Web 2.5. According to the company Web 2.5 can describe the route that Facebook is taking. (Then I am guessing that would entail Facebook’s Applications feature.)
(Via TechCrunch)