July 8, 2011 10:00 am Mozilla's Gary Kovacs Explains Challenges of Do Not Track What should websites track, and what should they leave alone? Mozilla (Firefox) Foundation’s Gary Kovacs says programming a browser to know the difference can be very difficult. US & World Videos 4:25 A conversation with San Jose Mayor Matt Mahan 4:49 A conversation with San Jose Mayor Matt Mahan 2:43 In the news: Bay Area home prices on the rise, Kaiser Permanente data breach, warm temps 2:14 ‘This is mind-boggling': Man who requested District 16 recount says it's taking too long 2:54 Students at Stanford to face consequences for ‘camp-in demonstrations' amid pro-Palestine protests