(Reuters) – A carnage in U.S. technology stocks widened on Thursday as shares of Meta Platforms Inc sank 20% after the Facebook parent’s costly metaverse bets and the impact of soaring inflation on ad spending spooked investors. Meta was set to lose about $78 billion in market value, if losses hold to the end of the session, adding to the trillions of dollars that some of the biggest tech names have shed this year amid rising interest rates and a stronger dollar. Meta has lost more than half a trillion dollars in market value so far this year. Its shares were trading at $100.55, their lowest s…