Your pinterest link is borked. Design looks pretty clean. I would bump the font size for legibility. I personally would avoid having tags in a tag cloud having larger font sizes than my main content, it is somewhat distracting. I think I would lean towards surfacing "related content" next to each post instead for discovery. I would change the latest entries to take up both middle and right column, and, most importantly, add a single paragraph summary/teaser from each post next to each title/image. Right now the title and image gives me very little idea of what the post is about. The main image looks very blurry/over-compressed, I would definitely suggest replacing it with a cleaned-up version. The thumbnails also have inconsistent levels of quality, some look clean, some look over-compressed. If you are linking to pinterest and facebook, I would suggest also creating a list page on stumbleupon, might be helpful. Here's an example: http://www.stumbleupon.com/lists/840022691085624002