LinkedIn, Social Sites Sell Off Before Facebook IPO
Shares of LinkedIn (LNKD), Yelp (YELP), Groupon (GRPN) and others connected to a social networking strategy sold off before the Facebook (FB) initial public offering priced Thursday night. Facebook shares will start trading Friday. In a tough day for the stock market overall, investors were feeling anti-social: LinkedIn shares sank 7.5%. Yelp lost 2.4% and Groupon 4.9%. Chinese Internet portal Sina (SINA), which has a booming Twitter-like Weibo