At the risk of getting called out for posting possibly operationally significant stuff in the middle of a massive retrospective about WCOM's acquisitions, here's a circleid post from a couple days ago from John Curran at ARIN.
http://www.circleid.com/posts/psst_interested_in_some_lightly_used_ip_addresses/ Discuss. :-) Sent at 55 MPH or slower from my iPhone