Much has been made of Google's authorship tag, rel=author. In fact, there are endless blogs on the topic floating around the interwebs. Most of them explain what it's all about in great depth and really, rather well; however I've found that a lot of them are a little too in-depth.
Let's face it - we're all busy. All we need to know is what it is, why it's useful and how to implement it. For example, if you knew straight away that it is easy to use, could increase your content's click-through rates and boost your social footprint, wouldn't you consider it a vital part of the content marketing process?
Well, here you go. No jargon, no heavy detail. Just the basics of rel=author explained... Enjoy!