There's a shift happening in the world of IT research. People are moving away from traditional labs, academics, and traditional companies to the organizations that today are shaping the internet as we know it today: Google, Yahoo!, Amazon.
These three companies are doing (or are perceived to be doing) all that's "cool" in R&D in IT and related fields. The "World Order" is changing. Shantanu mentions in a post that Arnab, who wrote about it, also came up with an awesome graphic to depict this new world order.