So, in my quest to find someone or something to proofread my stuff, I stumbled across a free web-based app called Ginger. Not only does it proofread through this webpage, but you can download an app to proofread in email, documents, and webpages. Anything it is able to proofread, it will put a tab at the top of your screen. Currently, it does not support Chrome, so Chrome users may have to switch to a different browser to check their blog posts before publishing.
It is very easy to use, and it goes sentence by sentence. It did find some errors that made it through, but also made suggestions that didn’t fit the flow of the sentence. Each change you can either approve, skip, or you can edit the sentence there with your own changes. I think, for free, it is possibly the best option for proofreading your documents.