Yahoo! using Drupal

From the Yahoo! Research web site:

"

The mission of Yahoo! Research is to develop the world-class science that will deliver the next generation of businesses to the company.

Our scientists focus on data-driven analysis, high-quality search, algorithms and economic models. Yahoo! manages many of the largest and richest data repositories in the world, and our researchers mine insights from these giant collections, individually and collectively, maintaining the privacy of our users while setting new standards for user value.

We believe in an open culture of collaboration with peers from academic and research institutions. We provide an academic setting with a focus on simultaneously publishing scientific work of the highest standard while driving a research agenda with significant impact on the company. At the same time, we follow the Yahoo! tradition of a great work environment with first-rate benefits and amenities, the freedom to exercise creativity in pursuit of a goal, and a fun, focused setting with world-class colleagues."