Larry Ellison buys Hawaii's Island Air SOCIAL NETWORKSLinkedIn stock at record high Online professional-networking service LinkedIn surged to a record high after analysts from Evercore Partners and Wunderlich Securities released bullish reports on the company's growth prospects. LinkedIn stock has more than tripled in price since its May 2011 initial public offering, outperforming Internet companies like Facebook, Groupon and Zynga, which are all trading below their IPO prices. Facebook ad service expandsFacebook is expanding a service that lets marketers tailor ads to its social-network users based on customer lists. ONLINE MUSICPandora caps mobile listeningPandora Media, the Oakland Internet radio service, is capping free mobile listening at 40 hours a month in the absence of sufficient advertising sales to pay for rapidly rising music costs.