<A target="_blank" href="http://en.oreilly.com/where2010">O'Reilly has opened early registration for The O'Reilly Where 2.0 Conference, March 30-April 1</A>, 2010 in San Jose, California and a preliminary lineup of featured speakers has been posted. Topics to be discussed include: Machine Learning; GeoStack and GeoBrowsers; Augmented Reality; and more.