On 7/8/07, SJ 2.718281828@gmail.com wrote:
These discussions about an article -- including about its deletion and notability -- should be preserved just as deletion discussions are. They will be useful if the article returns later, if others try to determine whether it should have been deleted, and are a record of discussions about knowledge by people who cared about the topic.
That's if the talk pages actually contain any relevant discussion; in my experience, a substantial proportion of the time the talk page contains nothing but templates.