paid traffic and relevant breakdown

How can you break your traffic into relevancy hits vs. paid hits and gather stats? I would like to present this. What does everyone else do?

Relevant or organic searches for keywords you own would be strictly based on your websites content and links. A common method we use is to setup a separate page for our paid listings.

Example: ovrt12.php

This file wouldn't be linked or associated to any other pages or files, this way it will not be crawled. You can optionally place it in its own directory and disallow that directory with robots.txt

Depending on the code you use, track the user through the site all the way to the sale, once the sale occurs throw the flag up in the database that this paid listing gave us "X" sale.

Hope that helps.