Groupon

Daily-deal site BuyWithMe laid off half its staff on Oct. 19, raising questions about its future as market leader Groupon prepares for its initial public offering.

People who buy online coupons from LivingSocial are richer, younger and smarter than customers of market leader Groupon, according to a study by Nielsen Co. LivingSocial users are 49 percent more likely than the average American online to make at least $150,000 a year, compared with 30 percent for Groupon, according to the survey.