Does Google already have too much power online? Or it is that investors perceive this to the the case? Personally, I doubt that markets would have reacted as violently if GOOG wasn’t involved.

Motley Fool makes a daring suggestion:

If Microsoft or Yahoo want a shot at Google AdSense – a market that is nearly as big as all of Yahoo! and twice the size of MSN’s top-line output – they will need to put the dagger between their teeth and treat an ad network as a loss leader. Even if it means offering 100 percent – or even more – for a limited time, AdSense will only get bigger without opposition.