This in from Mashable…
Lon S. Cohen is a writer and social media strategist. He is @obilon on Twitter.
Never before in history has it been easier to glean from the knowledge of others who will give it away to you for free. It’s equivalent to getting higher education. I’m talking about Masters level stuff. And it’s all available right there on Twitter. I call the people I follow who contribute above and beyond the basic answer to “what are you doing?” my professors of Twitter.