Amy Webb is tracking all the acquisitions made by Internet giants like Yahoo!, Google, Microsoft and AOL. No wonder, the red block corresponding to Google occupies the maximum estate.
A high-res version of the "Who Owns What" chart is available for download as a PDF or a JPG image so print and pin it to your cubicle wall - handy if you cover the digital media landscape on your site. Thanks Lee and Steve.
You may also like the Internet World Maps.
Reference Chart: Internet Acquisitions made by Yahoo, Google, etc - Digital Inspiration