Once upon a time, I suggested a Poser 'repository' for people who didn't want their items to disappear but still wanted a measure of control over their distribution. You subimt your items to the repository if you die or are no longer able to maintain a download site, the repository is authorized to distribute the items. You can tell them to stop at any time of course. They would charge a small fee for downloads to defray the cost of operation. If people had some assurance that things would be available in the future it might cut down on the perceived pressure to 'grab it now, even if you don't really need it now' as well.

"Democracy is a pathetic belief in the collective wisdom of individual ignorance." - H. L. Mencken