Not only does this show a level of cluelessness about the culture of the internet, it also appears to fly in the face of copyright law: everyone is entitled to fair use quotations of published works.
From the U.S. Copyright Office's web-site:
The 1961 Report of the Register of Copyrights on the General Revision of the U.S. Copyright Law cites examples of activities that courts have regarded as fair use: “quotation of excerpts in a review or criticism for purposes of illustration or comment; quotation of short passages in a scholarly or technical work, for illustration or clarification of the author's observations; use in a parody of some of the content of the work parodied; summary of an address or article, with brief quotations, in a news report; reproduction by a library of a portion of a work to replace part of a damaged copy; reproduction by a teacher or student of a small part of a work to illustrate a lesson; reproduction of a work in legislative or judicial proceedings or reports; incidental and fortuitous reproduction, in a newsreel or broadcast, of a work located in the scene of an event being reported.” (emphasis added)I doubt that most of the AP's claims for remit from bloggers on the internets will pass legal scrutiny. The Stanford Copyright and Fair Use Center's web-site is v. informative and has a good section on Fair Use.
Update: Mark Glaser on all of this. (h/t Atrios)