Frank!!! Are you okay???

For years, Andrew Sullivan blogged at a prolific rate.

His prodigious output was supplemented by dispatches from readers, public debates with fellow bloggers and ruminations on everything from the Geneva Conventions to "South Park." Blogging was a medium -- and a lifestyle -- that he helped pioneer. It also nearly proved to be his undoing.

"The truth is, I had to stop primarily because it was killing me," Sullivan said Sunday night at the 92nd Street Y in Manhattan. "I used to joke that if blogging does kill someone, I would be the first to find out."

He described the grueling pace that he maintained along with a small editorial staff.

"This is 40 posts a day -- every 20 minutes, seven days a week," Sullivan said.