I think 6 out of 10. I would read it and it would have helped me if I needed it, although you may want to include snippets of the code example in the actual article to demonstrate further the difference between the code required.
and yea I think fixed menu's are better, as a visitor I know where the menu is because I saw it when I landed on the page, so I don't really need it to follow me down the page, you could just extend the menu a lot, with a header for each social media website, such as "like this article? add me on linkedin.." then underneath have your linkedin profile, and connect button, and then same for facebook/twitter, under their own headings, as although your little icons are massively cute, I doubt you get a lot of clicks. (but you may do, I am just assuming).
yes, the title with white background looks alot better in my opinion.