We've had a lot of success with adwords campaigns with optimizing for clicks, but the last time I tested/compared (honestly, probably over a year ago), optimizing for clicks yielded better results than optimizing for conversions...seemed like the conversion optimization was a little too touchy on lower-volume search terms.
Has anyone had success with optimizing for conversions for ecommerce? Pretty seasoned and have ranged from 5k-50k spend/month, from 5k-40k clicks/month, but always open to ways to improve. Have one of those pesky Google 'account strategists' knocking again, so curious what kind of successes (or failures) others have had.