Josh Marshall, writing at Talking Points Memo:

Now Google can say – and they are absolutely right – that every month they send checks for thousands and millions of dollars to countless publishers that make their journalism possible. And in general Google tends to be a relatively benign overlord. But as someone who a) knows the industry inside and out – down to the most nuts and bolts mechanics – b) someone who understands at least the rudiments of anti-trust law and monopoly economics and c) can write for a sizable audience, I can tell you this: Google’s monopoly control is almost comically great. It’s a monopoly at every conceivable turn and consistently uses that market power to deepen its hold and increase its profits. Just the interplay between DoubleClick and Adexchange is textbook anti-competitive practices.