Not bad for generic advice. More about AoM than email, but, hey.

a list of bugaboos that picture the problem as more widespread than it probably is, but worth a read.

how embedding img src in a page does not violate copyright: " It's no violation of copyright for me to point your browser to their freely available cartoon."

media matters - to ethos and pathos. the media of a paper letter carries with it rhetorical statements about the sender, and about the relation of sender to audience. It's part of a rhetorical contract.

Matt details some of the conventions of sharing information and being a part of the space in web2.0 netiquette changes in web2.0: "If it's not worth the effort to make an original, unique post for the folks here at Kairosnews, don't bother."