MediaPost commented on the launch of Google Finance a couple of weeks ago with an inciteful comment:

"The product is no category killer. One innovation Google has made, however, is to aggregate blog posts about a company on the very page where the company’s stock chart, financials and news is displayed. It may be, one day, that these citizen journalists will influence a stock in the same way as news from Reuters or Bloomberg or MarketWatch. Surely all of this exposure through Google can only increase their authority and amplify their voices. By putting them on the same page as established financial news, Google is not only saying bloggers are influential; Google is making them influential."

I’m not a financial analyst so I don’t generally look at Google Finance like I would say, my Gmail, or some of the other Google Services.  I was looking at Coremetrics today because they just bought IBM Surfaid, and I saw information about the company and comments.   Perhaps this is different that what other financial services provide.