With a name like MightyBrand, while I think you've got a solid design already, it just doesn't come across to me as something bold enough to sport the name 'MightyBrand'. I'd look to add bold, heavy, red coloring rather than orange. The white feels clean, but it also feels a bit too open.
Also, in terms of conversions, placing the icons with links to the social sites themselves will drive some traffic away. Instead, create case studies for each one with very bold and obvious calls to action on the pages inviting the user to get involved.
The screenshot is good, but the border is bigger around the screenshot than the 'Free 30-day Trial' button. I'd sugegst either making the button 'louder' or simply increase the border's size, or decrease that of the screenshot.
Internally, one thing I notice is very wide columns for your content. This makes the text a burden to read. Make them more narrow. it looks like the line-height is good, but it may need to be bigger. A lot of the text is bold when it shouldn't be. You want a larger contrast between the content and the headers.
The Pricing page is a good start, but it's too bland right now. Spice it up by adding short descriptions of each benefit under the price chart. Add background colors to the chart items themselves. make the most important item larger and in the center. The little blurb underneath could do with some shortening I think. "Special Request? Contact us." As it is, it's too much text for something so simple. You can have more text on the contact page if need be.