A U.S. Appeals Court said Monday that thousands of lawsuits targeting Meta Platforms, ByteDance's TikTok and other social media outlets can proceed.The big picture: The lawsuits argue that the platforms are addictive and harmful to young people, and have prompted several tech companies to attempt to stamp them out in a years-long process. Editor's note: This is a breaking news story and will be updated.Go deeper: Scoop: Meta removes ads for social media addiction litigation