Facebook lead ads are a great way for businesses to gather contact information from potential customers who are interested in their business on Facebook. To create an ad, you need to set up a form that collects the necessary customer info, such as full name and email address, and then design an eye-catching ad with media, headline, and description. You can also add custom questions to the form. Once you've created your form and ad, you can target specific audiences using demographic information and set a budget for how much you're willing to spend on the ad. By following these steps, businesses can collect valuable contact information from potential customers and nurture their relationships with them.