The site looks a bit too blocky, I'm not a huge fan of the header design either.. the site could use a new template with more organized content.
With an adsense site, I really think that you need to worry more about whether your site gains clicks or not. It doesn't really matter how flashy the page looks as long as people visit it and click on the links. Apart from that, perhaps the links to the right of the page need to have a bit of white space around it to make them look more appealing.
Site is simple and good. I think that the navigation on the right could use some brain storming on how to simplify it. Lhlalyam
It looks nice but I think you should change the text "My Articles" To: " Home Security Articles" Or whatever keyword you are going after. Repeat the same for the Related news and videos sections. I am not an seo expert but it might help ? GL