The goal of the about:me page is to give you a more interesting view of statistics about your browser usage. The current version includes graphs that illustrate trends in your browsing and downloads histories.
The "Activity Stats" section graphs the websites you visit most, including the individual pages you visit most within each top-level site. This section also graphs your hourly browsing activity, which can reveal patterns in websites you visit most at various times of the day.
The "Downloads Stats" section illustrates the distribution of different types of files you download, as well as daily trends in your download activity.