A lead magnet is a free item given to visitors in exchange for their email address. In affiliate marketing it is often a short guide, checklist, small course, or simple tool connected to the niche topic. For example, a fitness page may offer a free workout plan that people can download after joining the email list. This step grows the list and creates a chance to share helpful emails later with affiliate offers. What type of free resource do you think attracts more sign ups in affiliate niches today?