ORLANDO, Fla. -- A man obsessed with missing child cases has become an Internet celebrity after purchasing an old TV news live truck, mounting cameras to its mast and broadcasting live images from areas involved in the search for Caylee Anthony on his Web site.

William Murtaugh, known as "Murt" on the Internet, said he is not alone in his thirst for coverage about Caylee, a 3-year-old Orlando girl who was last seen in mid-June but was not reported missing until a month later. Caylee's mother, Casey Anthony, 22, is jailed on first-degree murder charges in Caylee's disappearance.

"There are people out there who are literally addicted to Caylee," Murtaugh said. "The commercial media cannot provide everything we want. We want more. We're addicted to it," Murtaugh said.