"Impersonating someone online is a kind of identity theft, and on a site where you're leaving traces of yourself, a kind of digital "Kilroy was here", using the names and identities of other community members to make a point goes fairly powerfully against the intentions of their product.
(snip)
....(But) I've seen the most egregious trolls clean up their acts and play nice, and I don't think social software should have a death penalty. (No Rez for You My Friend!)"

--the fabulous Caterina Fake, on the mybloglog pishing snafu