Today I was reading Marketing Pilgrim and I found a great resources by Pete Abilla that could interest you.
Here is a nice timeline with all time acquisitions made by Microsoft, Google and Yahoo.
Ever wonder what are the most popular videos on Internet?
Vidmeter monitors Break.com, Daily Motion, Google, iFilm, Metacafe, Myspace, Revver, vSocial, Yahoo, and Youtube.
Here is a short preview - Top 3 Most Popular Videos.
No. 1 - The evolution of dance
No. 2 - White & Nerdy
No. 3 - Pokemon Theme Music Video
So, go ahead and check the Top 10 Videos of 2007 (till now).