A phone conversation I had a few minutes ago (with the names changed, obviously):
"Hello, could you give me Ron Klein's email address, please?"
"It's Ron dot Klein at Percival dot com."
"Is that the wee 'at' symbol?"
"Is that the wee 'at' symbol or A-T, the word 'at'?"
"It's the 'at' symbol; it's an email address."
"Oh, yes, I know; it's just that a lot of them are using the actual word A-T now."