Yeah - I'd search and destroy useless, mail-list messages first.

I routinely mine older, meaningful messages. Just tonight, swmbo asked me about a feasibility study group I was on a few years ago. Easy to answer with a little careful email searching. I'd hate to have lost those messages, especially as a document involved was one I had saved in my email, but was no longer on the county website...

I auto-label listserv messages to make it easy to prune them, en masse.

-jk