An interesting Yahoo article explains why Google is now considered the heart of the Internet and the electronic center of human knowledge.

In these 10 years of life, Google has indexed billions of web pages, images, books and even videos from all over the Internet. This is definitely a must read.

In the past years Google has expanded at a breakneck pace, and currently has some 13,700 employees. The company thrives on a culture of innovation: the best example is that it asks employees to dedicate 20 percent of their time to develop ideas for the company.