Some content remains valid for a long time, and serves as an ongoing resource. Other content primarily serves the purpose of providing an update, but becomes dated and inaccurate quickly.
Consciously consider the differences and act accordingly. I've seen it happen time and again where really solid content that has been carefully crafted for a long life gets drowned out by press-releasy stuff because they are in the same channels, treated the same way or quantitatively over-powered.
Does anyone else find this to be an issue in your experience? How have you dealt with it?