Google's Acquisitions Over $1 Billion - And How They Worked

has acquired more than 100 companies since February 2001. The search engine giant has not revealed how much it has paid for most of these firms. Among those that were reported, Google typically paid between $10 million and $100 million. There is a handful, however, that crossed the $1 billion mark. Some of those firms have proven to be invaluable to Google's business. Others are new additions that have yet to show their true value (or lack thereof). Click through the slideshow to see which of Google's acquisitions cost more than $1 billion. Disclosure: