The Ryanator aka The Linker version 0.2
Instructions:
Type up your blog in WordPress (just the text)
Copy and paste it into The Ryanator.
Click Linkify
Scroll to the bottom of the page under "Final Output"
Copy and paste the Final Output back into Word Press (it should keep the links if you are using a newer browser. I use FireFox, but it should work on IE, Safari and Chrome)
Select the entire text (CTRL+A on PC or CMD+A on MAC) and change the type from "Preformatted" to "Paragraph". (This is the workaround for now).



Known issues:
I'm scanning for text where there are two words next to each other that are capitalized. Unfortunately, you can run into a problem in these scenarios:
-- You begin a sentence like "Having Tim Lincecum as a pitcher..." (you will see a problem here.) Unfortunately, the scanner sees "Having Tim" and thinks it's a name. I'm working on fixing this.