This would be neat in my opinion... even if it was only for the video game related media (Mega Man, Captain N, stuff like that).  I can definitely see the appeal, perhaps starting small might be a good idea, since it drove up server costs significantly at one point per your blog post.

I agree with this one as well.  I once posted the wrong Tracking Number and couldn't change it to the correct one (though this was a while back, I try to be more careful now).  Would be nice!