(Reuters) - TripAdvisor Inc reported a 25.7 percent drop in quarterly profit as the travel review website operator earned less from referrals to third-party websites.<div><a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=O_tIepUWL_Q:bkgVBDnF2l8:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?d=yIl2AUoC8zA" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=O_tIepUWL_Q:bkgVBDnF2l8:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=O_tIepUWL_Q:bkgVBDnF2l8:V_sGLiPBpWU" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=O_tIepUWL_Q:bkgVBDnF2l8:-BTjWOF_DHI"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=O_tIepUWL_Q:bkgVBDnF2l8:-BTjWOF_DHI" border="0" /></a></div><img src="http://feeds.feedburner.com/~r/reuters/technologyNews/~4/O_tIepUWL_Q" height="1" width="1" alt="" />