Internet content providers have slipped to No. 170 among the 197 industry groups tracked by IBD, from No. 66 six weeks ago. But LinkedIn (LNKD) has been bucking the downtrend. The stock rose 2% Monday in heavy volume, following an 11% gap-up Friday, also in fast turnover. It’s now 10% past a 243.35 flat-base buy point, but the breakaway gap offers aggressive investors another entry near 262.95, the open price of the gap-up.