SEM Keywords to Revenue

Hi everyone,

I've been tasked with developing a process for tracking our SEM keywords to revenue.  I'm hoping I can accomplish this through some Eloqua customizations without needing to purchase a 3rd party tool.  Below are some thoughts I have of how to potentially accomplish this, but would love to hear other thoughts the community might have as well.

1. Create query strings for the different keyword parameters that are passed by the wide range of SEM networks.
2. Create an Insight report of form submissions by query string (this would get me to the point of tracking keywords to conversion metrics).
3. ? - How to tie to opportunity pipeline and revenue.  (This is where I'm still trying to think of the best way to accomplish, could potentially be done through some custom fields and objects in SFDC, maybe leverage a functionality in Insights and the Revenue Suite, or...?)

Thanks in advance!

Ryan