I tumble them till they're clean-ish and vaguely shiny, sort them by headstamp (partly I'm looking for cracks, partly also because I'm a little OCD in that sorting-my-m&ms-by-color-before-eating-them kinda way), and put them into my 550 for another shot.
There are folks that clean their guns every time they take them out of their safe, too. *shrug* If it makes you happy and you have the time, I wouldn't tell you not to do it, but I've never heard of any measurable pistol accuracy benefits from cleaning primer pockets even for Bullseye, much less IPDA/USPSA/Steel etc competition.