Elementblue has asked me, in a reply to my link-filled post from a couple days ago, why I reported that the Kerry sisters were booed at the VMA's, when CNN reported that the Kerrys were introduced at the same time as the Bushes, and that it was unclear who was being booed. Well, the reports that I read were inconclusive as to whether the Bush sisters were being booed, but conclusive on the Kerrys being booed. Check out these reports, some of which I did not find before I posted. Also, all of the reports I have read (with exception of CNN) have indicated that the two pairs of sisters did not appear simultaneously:
Above Top Secret (more reaction of viewers than a report)
The Washington Dispatch
World Net Daily
I did read this analysis before I posted, which suggests that CNN is misleading when stating that the boos were intended for both.
Here's video of the incident. No Bush sisters in view at the time, and the boo's are clearly directed at the Kerrys. Thus, CNN's reporting that the intended recipient of the boos was unclear is false.
So, in conclusion: the Kerry sisters were definitely booed. The Bush sisters were also booed, although many online news outlets did not mention it. The two pairs did not appear at the same time.
UPDATE: Oops -- I meant to link the CNN report. Here it is.