This is true to a degree. Simply bidding on the long-tail keywords will improve your performance, although probably not enough to be meaningful. But going throu

This is true to a degree. Simply bidding on the long-tail keywords will improve your performance, although probably not enough to be meaningful. But going through the SQR shouldn't yield enough long-term queries for this to pose much of a problem, particularly given that you should be periodically rewriting ads anyway.