I've been reading up a lot recently about Social Media Marketing as I am curious to know how the big brands are going to be able to play in this space in a way that doesn't get mocked by the audience they are trying to reach. Social Media Marketing is all about becoming part of the conversation, being a valuable contributor and having something to say that is relevant and interesting.
I was reading a blog post by Brian Solis titled 'The Social Media Manifesto - Integrating Social Media into Marketing Communications'. It is a very interesting read and would definitely recommend checking it out.