Will you do something for us? Take a quick, 10-second look at just about any site that isn’t Consumerist and then come back here. Done? Now see if you can remember all — or any — of the ads on that page. You probably can’t because (A) we’ve trained ourselves to ignore ad units and (B) you probably skimmed past or didn’t even get to a lot of the ads on that page. Advertisers know this, which is why Facebook is offering an option that only charges them when someone sees 100% of their ad. [More]