It's legally still a bit of a gray area, but generally when a person puts content out there using the social-media tools where content can be syndicated, they grant the world an implied license, said Evan D. Brown, attorney at Hinshaw & Culbertson, and author of internetcases.com. "I tweet on Twitter with the full knowledge and understanding and hope that someone else will see what it is I've put up there and retweet it ... You've got to look at the situation, evaluate whether there's some kind of express license -- for example, with YouTube, you're free to embed video in your own site, and you grant the world at large that right." Some social-media sites such as Flickr may have various licenses and restrictions for commercial use, so it's worth reading the fine print. Full Article at Advertising Age