Image source: Photo by Miguel Á. Padriñán: If you want to boost your website's SEO the easy way, then you have to consider options to improve its user engagement. User engagement is something that the search engines love because it boosts user-generated content. When we talk about user engagement, comments on blog posts come to mind, and yes, it is also a very important factor, but today I am going to be talking about two essential tools that will not only boost your website's user-generated content but also that are completely free to use, and you also do not need to sacrifice your blogging section to fill them in.