This is a first for me, but I expect it will eventually become common. I received an email with the following addition to the signature block:
this email is: [ ] bloggable [x] ask first [ ] private
Now that's a social hack that could one day be replaced by a technical hack. Email messages could have "bloggable" as a mime-type for example, and forwarding to a blog client would set up an entry. Lacking that mime-type, you'd have to resort to cut and paste, as now...
I post this here not for sake of memetic vanity, but to make a point. The reason we are building Web 2.0 is because we were not able to build Email 2.0. The first web didn't support our social needs, so we used email for everything. But we couldn't really hack it. Most social software has by now adapted to email, but email could never have adapted to it.