Starting a blog on your own is not a bad idea. But if you plan to grow your business, you will have to bring more people in to help you out. Keeping track of author stats on your site does not have to be challenging. Not when you have Author Manager for WordPress. This simple plugin lets you search through your posts by date and keep track of your authors.
You get a simple user interface that shows the contributions made by authors, editors, and admins. Links to posts are provided as well. It is not the most sophisticated plugin around but can be a time saver.