Tue, 02/07/2023 - 13:16 Tech Insider ChatGPT has surged in popularity over recent months.Thinkhubstudio/Getty Images Tags Markets, MI Exclusive, Mover, ChatGPT, OpenAI, artificial intellegence, Chegg Source Chegg plunges 23% as it shrugs off the threat of ChatGPT after giving disappoin…