I accidently deleted your note on another one of my articles, so I'll respond here about tracking tags. The short answer is that my very smart girlfriend is an excel whiz.

She created an excel spreadsheet for me that helps me track all sorts of cool data, tags included. I wouldn't know how to explain it if I tried.

lol

How I BELIEVE it works is the excel spreadsheet automatically cross-references the tags I use with the money I make on each article, then aggregates the data.