I have tried to make this guide as complete as possible. If you have any questions I'll be happy to answer them. Additionally, leave a comment and lets discuss viral marketing in general as well.

Matt, I found the links included in this very valuable. The article itself is painful to read, however. It's not your writing, but the formatting. Centered multi-line headings, bad padding between headers and content, too much space between lists, bolded italicized underlined serif text... it's an unscannable wall of text. I'd highly recommend taking a look at some of the equally lengthy posts done by blogs like SEOmoz and KISSmetrics - exhaustive guides can be very valuable, but only if they're easily readable. I know how much effort you must have put into writing a post like this; setting CSS styles to ensure legibility is a one-time extra effort that will make a huge difference in how well received your content is.

The post was originally a downloadable PDF file that had graphics and much greater readability. I told my assistant to import it and publish it as a post, which she did. Unfortunately I didn't check her work (which is usually impeccable). I see what you're saying and I'm definitely going to have to fix it! Thanks for the up vote and I'll get that mess straightened out. If you scroll down a little on the main blog page you can find the download link for the PDF version which should be significantly easier to read.