@talanhorne,
I also keep a Spread Sheet which is used to track my expenses and income daily basis! It might be a good idea, specially when we get Google Spread Sheet, we can easy access them through the internet!
I am not an author and I don't know that ability is in me! But what you are doing here is so great! You are showing the correct path to all people who want to be a part of Authorship!

Cheers~