Nice work Rob, I can see this being very useful. Some feedback:

The title of each code snippet should be a link, which takes you to the same page as the "comments" link. I imagine people will want to bookmark or email their favourite links, this might make it easier.

Social buttons (twitter etc) on each "code snippet" page will help spread the word

Although it has been downvoted I agree with the commenter who advised you to avoid use of "codes". "Code snippets" perhaps? Codes, in my experience, is usually seen in the context of a poorly-worded forum question. It obviously won't kill the site, but IMHO it just looks like a spelling mistake and doesn't fit in with the professional look of the site.

Best of luck with this, it looks great!