From "TRex," at http://www.firedoglake.com/
I suspect he meant to limit it to righty bloggers, but I think it applies just as well to anybody with an unduly hostile online persona...particularly one that doesn't, mmm, square well with their actual, IRL presence.
Who knows? There may even be* some magicians like that online! I mean, it could happen.
93 93/93 -- AJ
* I originally typed "may even me some magicians..." Oooh, calling Dr. Freud! :0