To To:, to CC:, or to BCC:?

I just read an amusing article in the Economist about etiquette when new technology comes along. One of the questions about emailing was the To or BCC question (you're writing to many people, do you put their addresses in To or BCC?), and the article writer, without any ambiguity, said the answer was to BCC, with your own address in the To.

Now I hate getting emails that have done that, because you have no idea who else got the email. So I'm firmly a To person, if nothing else, because within friendship groups, others can re-use emails sent round if all addresses are in the To field, whereas that's not possible with BCC. Also it seems a little secretive and shady to put addresses in the BCC field. So I don't agree!