You will like this site at the first look, its really well made has great content and a very good example of how to showcase your content and make it a community site.

SEOPal is all about ranking the top SEO factors. Everything is created and voted on by the SEOPal community. Here you can learn Whitehat, Blackhat, On-page, Off-page or whatever else suits you best

Great theme for blog type websites. Simple arrangement and clean colors. The content is very readable and Ad placement is also good.