Yes, it was the AdWord ad I thought it was that produced my commission yesterday! This ad doesn’t get shown very often; often 10 times or less a day, and clicks only a couple times a week, but it is definitely paying off. That’s two $15 commissions for less than $1 spend on AdWords. I’d call that one effective. Now if I could just get more clicks. I’ve added more keywords to the list, so hopefully they’ll produce something too. It’s not significant statistically yet, of course, but I’m happily optimistic.