Very nice site, I like it. The only thing I would suggest that you change is the layout. People are always naturally drawn towards the left hand side of the page to look for important news and latest news features - just look at sites like dailyfx.com and other financial news sites. I think having a large 'twitter' area on the left is a bit 'off putting' and feels too unfamiliar.
Other than that I think you will do well and wish you good luck.

I like your blue and orange color choice. Your icons are nice, but I almost think you'd be better off choosing a different set that uses one solid color rather than a few. This way, you can adjust the hue to perfectly match the orange in your logo. I would replace the black in your logo with a dark blue. Maybe use solid bars for your categories instead to distinguish them more from your nav. Overall you've done a great job

The bottom of the logo is grainy and hard to read. I find the layout to be difficult to follow and navigate. The text on the top navigation bar would look better in a bold type. I would reserve the h1, h2, and h3 tags for my keywords and use CSS to code the box headlines.

I think that the home is too much.