By Dawn Chmielewski (Reuters) - Frank McCourt announced on Monday that Alexis Ohanian, the co-founder of Reddit and a venture capitalist, has joined his bid to acquire TikTok's U.S. operations as a strategic adviser specializing in social media. Ohanian was an internet pioneer who founded Reddit with his roommate from the University of Virginia. He sold it to Conde Nast in 2006, then returned in 2014 as executive chair to lead a turnaround. He also has invested in a number of tech companies, including Instacart, Patreon and OpenSea. “He has that broad portfolio of experience … of where social media...