Now is your chance to learn to build your own search engine for free!"Professor Sebastian Thrun has given up his Stanford position to start Udacity — an online educational venture. Udacity's first two free courses are Building a Search Engine and Programming a Robotic Car. In a moving speech at the Digital Life Design conference, he explained that after presenting the online AI course to thousands of students he could no longer teach at Stanford: 'Now that I saw the true power of education, there is no turning back. It's like a drug. I won't be able to teach 200 students again, in a conventional classroom setting.' Let's hope Udacity works out; Stanford is a tough act to follow."