BizSugar.com › Social Media › Where to start with Twitter Cards, Facebook Open Graph and Google+ Markup

Social mark up, is it's time now? Been around for a while but I've certainly not felt there has been a rush to implement it other than by news sites.
I wanted to get my head around it some more so wrote this up. *How To Use Twitter Cards, Facebook Open Graph and Google+ Markup*

Any good examples out there worth a shout?