> Bits are cheap right? All the world's information is important. Why should anybody reading about Michael Jackson be deprived of my opinion about him?

This is a pretty naïve argument.

Take, for example, the recent brouhaha about Sarah Palin and her comments about Paul Revere. Barring a future where the comments have massively effected misconceptions in the common perception of Paul Revere (let's say, on the order of Columbus's voyage and the flat earth myth), there's basically no grounds for arguing that Palin's comments should be mentioned in the Revere article. But they absolutely are deemed appropriate for the Palin article.