Lately, I have noticed that neither increasing ctr or increasing price is helping increase traffic for any extended period of time. Traffic seems to go up as you fine tune, but after a month or so tapers back down. It is like swimming against the current.
The situation is so frustrating that I have lost much of my enthusiasm, concentrating my energies on other traffic sources.
Is anyone else experiencing the same? Could it be that Adword traffic is taking a hit? Or maybe Google is manipulating traffic to benefit the really big fish?