If you don’t care who gets the credit for something, you can accomplish more. That works in both directions. You can pass an idea along without asking for anything in return, or someone can steal an idea and not give desired credit.
When asked whose idea it was, representatives from the Pennsylvania snack-maker cited James S. Herr — who founded the company in 1946 and died in April 2012 — was fond of quoting President Harry Truman, even if he probably didn’t say what he’s credited with saying: “It is amazing what you can accomplish if you don’t care who gets the credit.”
I try to use Creative Commons instead of Copyright. While I still ask for credit for my work, I try to encourage sharing of information, as information that is shared does not fade into history so quickly.