Answer:
You used to come to me for all sorts of information and knowledge before the internet was born
Can not be bought, Can not be sold, Even if it's made of gold. What is it?
I am two-faced but bear only one. I have no legs but travel widely. Men spill much blood over me. Kings leave their imprint on me. What am I?
I fly forever Rest never.
I go from house to house a messenger small and tight. Whether it rains or snows I sleep outside at night.
The answer I give is yes, but what I mean is no. What was the question?