Squidoo allows users to create "lenses" focused on specific topics that function similarly to blog posts. These lenses can earn revenue from affiliate links and drive traffic to the creator's main website. The document provides tips for using Squidoo lenses to promote a website, such as including calls to action and links in the lens text and images that drive visitors to the main site for more information. Squidoo lenses should also be updated regularly using an RSS feed from the creator's blog to keep the lens fresh.