The “social” part of social media is a metaphor for a conversation you would have over the back fence, or in a shop, on the street, and so on, it is just electronic.
It makes sense therefore to treat the e-conversation the same way you would treat a personal one, listen, ask questions, be polite and attentive, engage.
From one of the gurus, here is a list of 19 ways, all of which are just the common sense rules of behavior we apply without a lot of thought when we engage in a conversation across the back fence, that should be applied to blogs, and all other forms of social media.
Many businesses appear to miss the point, seeming to think that they can control SM as they do their internal communications, and failing to recognise the totally voluntary nature of social media. It is this voluntary participation that gives SM its power to endorse and inform. Just like over the back fence, we recognise that there is little self interest in an endorsement, and it comes from somebody with whom we have engaged voluntarily, so it carries great power.