There's nothing new to say, but you should say it anyway
As the saying goes, theres nothing new under the sun. But that doesn’t matter.
As Merlin Mann says:
There's someone born every day who hasn't seen the Flintstones
There are people out there that you’ll encounter everyday who will benefit from what you have to say, who will want to learn what you have to know. You may think your market is saturated, but the market to teach that market will never be too saturated.
Pay it forward.