Social Media, Social Networking, Social Media Marketing

Mike McGrail over at Social Penguin was asking for some ideas for definitions in less than 140 characters ( yes just a Tweet's worth)

social media - is about what consumers want to talk about

social media marketing - is about how brands listen and respond to what consumers talk about

social media networking - is about consumers gathering to talk and listen to each other and the brands they love or hate


Any takers?