OpenAI's Instant CheckoutCourtesy of OpenAIOpenAI on Monday announced Instant Checkout, a new feature that allows users to buy products through its artificial intelligence chatbot ChatGPT. Instant Checkout initially supports single-item purchases directly from U.S. Etsy sellers, and it's available to U.S. ChatGPT Plus, Pro and Free users. OpenAI said more than one million Shopify merchants, including Skims and Glossier, are coming soon. Shares of Etsy and Shopify popped about 5% on Monday.OpenAI...