The statistics they record for you are "unique page impressions" which means your site's traffic, "clicks" which means how many times people have clicked on the ads on your site, and your "effective CPM" which is described as follows...
"Effective CPM doesn't represent how much you have actually earned -- rather, it's calculated by dividing your estimated earnings by the number of page impressions, then multiplying by 1000. For example, if you earned an estimated $0.15 from 25 page impressions, then your page eCPM would equal ($0.15 / 25) * 1000, or $6.00. If you earned an estimated $180 from 45,000 ad impressions, your ad eCPM would equal ($180 / 45,000) * 1000, or $4.00."
|That shit's intense!|
You then throw your RSS feed on StumbleUpon, Tehcnocrati, Digg, and other venues and tag your blog with labels about making some money...and low and behold you are gonna get the hits and nothing but the hits.
If I continue updating this blog, I guarantee you the only blog update that ever has a good chance of raking in any good amount of free internet money is this scam one you are reading right now.