AI prompts are instructions that you give to an AI system to tell it what you want it to do. They are like a set of directions that help the AI understand your goals and create the output you're looking for. Prompts can be used to get AIs to do all kinds of tasks, like, writing articles, stories, or poems, generating images or artwork, answering questions, providing analysis and much more. The tricky part is writing clear, concise prompts that produce the results you want. That's where prompt marketplaces like this come in. They offer pre-written prompts that give you a head start and fast-track writing prompts that are more effective. Here are my picks for the three best prompt marketplaces to buy and sell pre-made AI prompts.