Our recommendation for LinkedIn (NYSE: LNKD) is UNDERPERFORM with a target price of $182. Although the company recently reported a better-than-expected Q2’15, the bigger-than-expected contribution of Lynda.com could be hiding some issues related to the company’s core business. LinkedIn is ready to follow Yelp and Twitter By Gabriel Zapata; Yuedan Lu; Marco Riveri; Qian Huang;…