Avoid the trap of crafting long lists of generic keywords and work to develop a highly targeted set of words for your niche. "Don't trick yourself into
thinking that broader is better," says James. "With AdWords that's just not true."
Don't forget to include said keywords in both the headline and body copy of the ad, and try out all of the matching options that AdWords offers, as broad match may work best for some campaigns, while negative, exact or phrase matching will net greater conversions with others.