Click on Posts. See how it shows "All posts (unfiltered)"? Make that your front page. Put a tag cloud at the top. Change the page title to say "Share programming links and filter them with tags" instead of "your personalized view of the programming world."

It took me 5 minutes to figure out what your site was with all the vague copy writing everywhere, and that's only because I clicked on Posts. If you had simply presented the functionality of your site on the front page, I'd have known what it was right away.