I like the concept although I always hesitate to use ghost writers. If you really want my business, you have to show me the money. Demonstrate the expertise in your writers, their engagement (comments), their impact/retention (uniques/views), and their ability to write deeply interesting content.
What I saw was a collection of random, poorly-formatted writing samples, disorganized testimonials, and vague pricing details. Normally I'd just keep to myself and move along, but this is a service my company would potentially use in certain areas. So I think it would be a huge improvement if the site were focused on convincing me, as the owner and someone with irrational concern for our image, how you'll make us bigger/better/faster/stronger.
This is very good feedback. We're actually working on some Machine-Learning technology that takes all of Wikipedia's content, builds a topic model, and applies it to the 10k pieces of content that we've written over the past couple months. It will allow us to rank writers by their expertise in very granular fields (so for instance we'll be able to tell you who our best "outdoor recreational equipment" writer is). We'll provide a deeper explanation of this technology in a (hopefully less controversial) blog post in the next couple of weeks.