Chitika Labs has been tracking iPad sales since the day iPad launched by counting cookies of new iPads hitting the Internet, and on April 8, six days after launch day, according to the number chitika labs posted, there're 564,257 iPad had been sold. While today, just 15 days later, there're 1,036,415 (estimated number) iPad have been sold. Chitika labs also claims that there're 32,866 new iPads were seen today, which about 4% of all online iPads. What an exciting number to see, good luck iPad, rock the world!