Social media stocks in the U.S. have been closely watched since Federal Reserve chief Janet Yellen said during her testimony last week that the sector was seeing substantially stretched valuations.
"Valuation metrics in some sectors do appear substantially stretched—particularly those for smaller firms in the social media and biotechnology industries, despite a notable downturn in equity prices for such firms early in the year," she wrote in the full policy report accompanying her testimony.
While the sector was among the hardest-hit earlier this year, it has since bounced back. One exchange-traded fund that tracks social media-related stocks—the Global X Social Media Index ETF—has rallied by more than 10 percent in the past two months.
Tell us which social network you think is looking "stretched" by voting in the poll below.