US conservative website publisher Breitbart dead at 43 Mar 1 11:07 AM US/Eastern Andrew Breitbart, a US conservative commentator and creator of a popular news website, died early Thursday in Los Angeles, his website announced. He was 43. "Andrew passed away unexpectedly from natural causes shortly after midnight this morning in Los Angeles," Breitbart.Com said in a statement. Breitbart was best known for his website, which aggregated news from across the web, but was also a fierce advocate of conservative causes.