I've noticed the disappearing receipt syndrome before. It happens on other important historical documents too, like my script for the voice over I did for a CDrom a few years ago.

I think you should have said you fell in the pool twice at the beginning, or is this a legal tactic?

Did you try lemon juice over an open flame????

I'm glad someone else spends time thinking about the disappearing ink on receipts. I occasionally wake up in the middle of the night, wondering what the IRS will do with my pile of blank receipts.

I thought of you at 5am today as I was making my Costco list. I remembered that you had said they have their Christmas items out, and I felt mildly traumatized at the idea of rifling through them in September.

it does suck but yes, heat sensitive printers..I noticed it a few months back when a receipt in my fast food bag was blank where it had laid against the warm burger I had purchased..being female my buttocks do not get close to my wallet..thank god :)

I have not experienced this type of thing here but I am certainly going to watch out for it now especially in light of what moonandsun said. I am keeping receipts of all office supply purchases, printing, photocopy etc for my new business. It would not help me much if I submit blank receipts for tax purposes.

I think the real question here is: Why do men wear put their wallets next to their asses?

(The falling into the pool thing would be a non-issue if your wallet weren't in your back- ass- pocket when you took the plunge.)