Social tags are the keywords that users create as they discuss or categorize topics on social media. And they can offer valuable insights into consumers’ perceptions of products and brands.

Ask anyone who loves those iconic building toys: Lego sets aren't cheap. And those plastic brick sets very rarely go on sale. The Smith School's P.K. Kannan says Lego is part of an elite club of brands that hold their ground on price and quality. 

The best givers take time to understand their customers, who just might want a Miles Davis poster, shares in the local utility company, a piano or a pocket calculator. 

It's not "game over" for Toys 'R' Us. Its bankruptcy this week is more of a "timeout." The Smith School's Jie Zhang says that if the toy retailer plays its cards right, it could end up a winner.

Upstarts lacking a proven track record can offset their disadvantage by explicitly promoting themselves as highly moral. Sympathetic consumers will respond.

Many people feel embarrassed about doing fun activities alone. Companies that help solo consumers overcome their fears can tap into a vast and growing market.