A Halloween competition is a seasonal marketing strategy where participants complete a task for the chance to win a prize. You can hold the giveaway, contest, or competition in person or online. Many eCommerce websites and businesses run online giveaways as part of their marketing strategies. This is because giveaways are popular on social media and more cost-effective than running paid ads. Moreover, giveaways help brands generate leads and grow their audience. When you give something away for free, your audience feels compelled to reciprocate with social media follows, reviews, email subscriptions, website traffic, or word-of-mouth marketing. Here's an example from Food Love Story: By running a Halloween giveaway on Instagram for the chance to win a free cake, they generated tons of new followers, likes, and engagement.