Imaginary thread;
If I e-mail you a small payment to cover your postage and expenses would you be prepared to pop one of the copies in the post to me?
Certainly. I will mail you off list with my address.
OK I've e-mailed you a large SAE and a ?5 note.
No, problems, I've put them in the post and e-mailed you 50p change.
Thanks!
You swine! you the ?5 you e-mailed me was forged!!
(any Goon Show fans will recognize the abouve!)