Do your homework before you approach your customers online. Here's how users on the top social media sites broke down by age in August 2009.
JetBlue said it had 1,000 free tickets to give away to New Yorkers who showed up at a location broadcasted via Twitter. The only complaint so far: Couldn't there be more?
A tiny fraction of those who use the fast-growing social network phenomenon Twitter generate nearly all the content, a Harvard Business School study shows.
