Part of a mail signature which reached me some minutes ago:

This email is: [ ] bloggable / [ ] private / [X] (ask first)

I like that simple form very much because of the one line which says all. You may see this as a follow-up snippet to the pretty complicated thread which was kicked off by Ryan with one of his famous 'simple questions'.

Legal Issues of Posting E-mail Correspondence on Blog

Maybe I should use that line as my public performancing.com signature :-)