Whether we realize it or not, all social media websites have a certain (usually unwritten) etiquette. This article lists some basic etiquette when using Tumblr.
I thought it was really interesting that Skype has become so incorporated in the business world. And that blunders, that may be funny or annoying during a normal Skype call (like never making eye contact with the camera), could be more costly when communicating with business intentions.