first thing i'd say is throw away those adsense ads and create an opt in form offering something great
WEll it looks really clean and easy to use, but right away I see a HUGE problem...you don't have social share buttons! People need to be able to share your content with their friends on FB, twitter, etc. And this will get the word out quicker about your site!
Well, I tried to add your site to RSS feed reader(google reader). But there wasn't rss support, add it. And site seems cool.
Your site is great. Informative website. I think the purpose will stand out and serve well. But I don't like your text font size. If you use small size I hope your site will be more clean. Overall nice design.