2. Meta tag appropriately, if not title, so search engines have an easier time finding your media. For example: "fallaciousargument", "netneutrality", "globalwarming", "nucleardisarmament", "freedomofthepress", "thewaronterror". Pretty much every media hosting site out there (Flickr, Blip.tv, YouTube) uses meta tags. Try Technorati.com to get an idea of meta tags.
3. Use a Creative Commons license. It will make your media more available for re use without the extra steps of the user writing you for permission.
The new ways of gathering media can make it easier for people to network and get what they need to do done.