This guide is a great starting point if you're curious about the importance of Schema.org and semantic markup.

Great trick. I recommend trying this if you are suspicious one of your clients might have a penalty. Or, Google says they removed a penalty, but the results don't seem to reflect that. 

Best Local SEO related article I've read in a while. 

If you're not in to reading (and in to SEO), here is a nifty infographic explaining Authorship and Author Rank. 

Science told through the lens of a video game. 

I'm 7 weeks late to this article, but who cares. It's an interesting read. #semanticsearch   #seo   #knowledgegraph  

Excellent summary of Local SEO best practices. I'd add one to the list, schema markup.