I love the concept, but a piece missing here is how many "goals" / "conversions" each post generates.

From my own adventures in blogging I found that # of visitors isn't the right metric to measure success / fail.

EG - this somewhat technical post is low visits (~1500) but consistently generates leads at a high conversion rate:

http://www.conversionvoodoo.com/blog/2010/05/how-to-track-co...

Vs this link-baity post which generated lots of visitors (15,000+) but generates substantially fewer leads than the technical post:

http://www.conversionvoodoo.com/blog/2010/12/%E2%80%9Cmerry-...

That's not to say that there isn't inherent SEO / brand value in high-traffic posts but again, in my own experience, I'd rather have a handful of posts that perform like example #1 vs. a dozen of example #2