Oh, really, Google?<p>Google may be producing massive value, but for the most part, it's <i>THE</i> online ads network in terms of PPC. They're gunning for the banner ads with their DoubleClick acquisition and they're trialing CPA ads. All these are online, and in February, they exited the radio ads market: <a href="http://google-tmads.blogspot.com/2009/02/google-exits-radio-but-will-explore.html" rel="nofollow">http://google-tmads.blogspot.com/2009/02/google-exits-radio-...</a> .<p>In terms of dollars spent on online ads, Google gets the lion's share. I've seen some reports say 90%, but I'd wager it's closer to 70-80%.<p>So it looks like a monopoly, walks like a monopoly, and acts like a monopoly. The key question is whether they've abused this monopoly. Being a monopoly in itself is not illegal, but using a dominant market position to stifle competition is very much so. I say let's investigate and make sure there is healthy competition.