techcrunch's traffic no doubt rose well above average during the whole affair, they have a few detractors questioning their legitimacy, but where are they? techcrunch deleted every comment that wasnt calling for the death of last.fm from each post.
whereas last.fm, they may have had some extra traffic, but they have had quite a few people deleting accounts, 3 posts on the worlds largest(?) tech blog along with threads on slashdot and a long list of people in their own forum worrying about being sued for using last.fm.
combine that with the ridiculous practice of posting these attacks on friday nights and the fact that techcrunch were the only people to hear from this tipster, its hard to pass off techcrunch as the innocent victim.