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That the bloggers rejected third party fantasies is the most important development. If the naivete that led to the disaffection and distrust of Dean's supporters is allowed to take over again, it will prove difficult to correct at a later date. (I suspect Dean himself could have made a difference in this respect, but I haven't seen his speech yet.)
Also, I'm not sure from the reports so far that Clinton made any enemies, at least, than she already has for accepting lobby money. There is a large netroots contingent that's not going to accept her under any circumstances, regardless of whether she wins the nomination--and her not catering to them is in some ways a sign of strength.
That she seems to have been embraced, despite the policy, is what is most encouraging. The gap based on her experience and acumen seems actually to be rising amongst the realists, rather than the cynics who vote based on the polls and for personal reasons instead of in their own best interests. If blogland gives her a fair shot, I think that's all she's asked.