I have not done any research yet but does a simple blog need a Facebook page? It is not a blog about products or brands, just on website promotion and optimization.
Personally I use my facebook to let my friends/followers know when I have a new post or any new changes to my website and blogs. I use one facebook profile for all of my websites and blogs the same with twitter. Personally I find twitter not only the easiest way to let people know of an updated blog, but also the most effective.