Re: a business opportunity?

The real solution to the scorched earth problem is for aging from blacklists to be dynamic.

Um, this isn't exactly a revolutionary idea. Almost without exception* the blacklists that are widely used have some sort of age-out so that the remove addresses that don't continue to show bad behavior. The problem is that there's a zillion little networks with their own private blacklists, where the policy tends to be to add a block when someone complains, and then forget about it, removing blocks only when there are counter-complaints. Talk about not scaling. R's, John * - some of the for-pay MAPS lists don't seem to have an aging policy