Where equals (or close to equals) get together to interact.
On Facebook it ‘s like a school reunion or a family picnic or an office party. A loose social gathering with no specific interest focus.
On Twitter it looks more like a cocktail party. Lots of subgroups with specific interests. But however it looks, it is not a medium. It’s a social gathering. To twist McLuhan, “The message is the medium.” This is not a broadcast environment. People are not on Twitter for the content. It’s all about the context. And the quality of the conversation is what reigns supreme. And here’s the problem…

Full article: SOCIAL MEDIA IS SOCIAL BUT IT’S NOT MEDIA – petereconomides posterous.