Opt-in forms that are clear and focused usually convert better for affiliate offers. The most effective ones often use short headlines, simple descriptions, and one strong call-to-action. Giving something useful in return, like a free guide or checklist related to the offer, can also increase sign-ups. Pop-ups with exit intent or slide-ins on blog posts sometimes get more attention without annoying the reader. Also, placing the form near useful content, like at the end of a helpful article, can work well. The goal is to keep the message simple so people know exactly what they’ll get. A clean design without too many distractions makes a big difference. It’s not about using fancy words or too many fields — just clear value and an easy way to sign up. What type of opt-in form have you noticed gets more responses from people?