In response to my RSS readers are not a business post, I’m 99.9% sure this is on target:

I think that Bloglines was scared off the contextual adverts strategy, by Schwimmer and Calacanis (probably others too).

And some folks may not like this stance because it seems anti-blogosphere, but protecting publishers and authors is NOT anti-blogosphereSchwimmer nailed it:

Martin Schwimmer, a trademark lawyer, demanded that Bloglines remove his RSS feed from their service and Bloglines quickly complied. The upshot of that case was that although Schwimmer was mostly condemned in the blogosphere for his stance, the fact remained he had highlighted a legal grey area – and Bloglines had backed down.