I would say that you definitely need to guide the visitors attention to where you want to lead them. The first thing I think when I visit your site is “Ahhhhh, links everywhere!” lol. There is not enough contrast in your font as to what is most important.
I’ll be honest, it looks like you have a “TON” of great information; And your blog post really interest me personally, but I wouldn’t stay on your page because it looks extremely intimidating.
5 Suggestions:
1. I would separate the sidebar from the content area, instead of having it so close.
2. I would increase the font size of your titles and change their color.
3. Delete some of the sections, like random posts, tags cloud, statistics, and keep either latest comments or most viewed posts (I wouldn’t do both)
4. Put Join webmaster toward the top of your website with a little opt in form or cool button to join. You can add a different color background to that as well. Have the “Join Webmaster Sun” with the biggest font on the page.
5. I think you site would look good with double sidebars, left and right. I would add your “categories” sections to the left one, just like SmashingMagazine.com
has theirs.
Just my opinion.