Solid idea, but the one problem I noticed right away is that the site does not currently load news. "Error loading news. Please try again or contact support." Here are two other issues I think you should look at:

UI issue: When I click on a stock, I get the stock quote and information on the right side just fine. However, it does not say anywhere the name of the company. I think that putting the company name above the stock quote on the right frame would be useful.

External links: When linking to an external site (such as Google Finance) "Open in a new Window" does not work for me. Also, the bookmarks link is a bit confusing; it shows a few icons (like del.icio.us) and one could think that clicking on a part of that bookmarks icon would be linking to that particular service. Finally, the top bar (the Streetread part) seems to blend into the external page at times; maybe use part of the dark blue header in the design of the external top bar?

Overall, I think that this is a great service so far, good work!