Should I keep the receipts for online purchases?

Should I keep the electronic receipts for my online purchases on my PS3 (and 360) ? Will they ever come in handy in the future? I mean, it's not like I can return the stuff I bought, so why bother with them?

Rule of thumb....always keep receipts.

" Rule of thumb....always keep receipts. "

Just print the receipt as a PDF and store on your computer.  Easy enough to make a Receipt folder and toss all the PDFs there.

I use Mozilla Thunderbird so I created a "receipt" folder in which I'll keep them all. I'll definitely check out CutePDF though. Thanks.