Whoever's posting at www.twitter.com/markdanielewski is not in fact Mark Danielewski. Everything from April 24th on is a fraud. We're currently working on shutting down the page. In the meantime, and on behalf of unwary innocents, if any of you are on twitter please feel free to tweet something exposing this impersonator.
As a general rule — whether on myspace, facebook, twitter, [future sites to come]. . . etc. etc. — we will always list authorized sites here.
At present there are no authorized sites anywhere else.
There is only here.
(Clarification: MZD used Twitter between April 13 - 23 and then closed the account.)