[BlkDrew]

This is what I found researching the interwebz

"Burnout's can occur for a variety of reasons or combinations of reasons. The most common cause of burnout is lighter abuse. When a pipe is new and relatively unsmoked it is vulnerable. The interior walls of the pipe are literally naked. Intense flame as produced by a lighter being sucked down the bare wall of a pipe will certainly cause it to char and crack. Unless immediately fixed will certainly lead the pipe to burnout. A suggestion to avoid this would be to use matches until the pipe develops a carbon cake. Don't try to ignite the last flake of tobacco with your lighter. Tobacco is cheaper than a pipe and a little can be sacrificed in order to preserve it. My second suggestion is to never use a lighter at all even after a pipe is broken in. As this is impractical for a lot of people I would suggest using a lighter with care."