The other day I got an email from Julian at Shoeboxed.com. Shoeboxed is a Web 2.0 site where you can organize receipts for purchases. You can scan receipts and upload them into a Free account. Since other personal finance sites don’t really have functionality for entering cash receipts, this site is pretty helpful.
The other cool thing is you can give online stores you “shoebox email” instead of your personal email address when sending receipts for purchases. A lot of my clients have envelopes full of cash receipts so this may be a solution.