my earnings have taken a dive over the last month like a lot of people's, and its probably got something do with google rolling out this new caffeine thing. or maybe it's the new interest-based ads, who knows. could be a few different things.
but i was reading the AdWords forum to see what was going on, and there was a topic in there talking about a new 'cost-per-action' thing that advertisers can choose. and i was wondering what that involves.
presumably it means that publishers will only get paid if the clicker does a specific thing after clicking the ad, like visiting a checkout page.
that would obviously cause our recorded clicks to plummet, if google have started discounting genuine clicks that lead nowhere.
does anyone have any info about what 'cost-per-action' actually is, and whether that might be causing our CTR to drop?