You can use several free traffic methods to earn big affiliate commissions. You should focus on SEO to drive organic traffic to your blog. You can create valuable content that ranks on search engines. You must utilize social media platforms like Facebook and Instagram. You can join relevant groups and share your affiliate links. You should use YouTube to create product reviews or tutorials. You can also leverage forums and communities like Reddit. You need to engage with users and share helpful advice. You should build an email list to send targeted offers. Consistent effort leads to bigger affiliate commissions.