Enhanced Distribution allows your blog’s public content to be included in the WordPress.com stream, increasing your reach and traffic.
The Enhanced Distribution option for Jetpack adds your content to the millions of articles associated with WordPress.com, which has a feature called the “Firehouse.” This is a feed of articles from WordPress.com blogs and WordPress blogs that have Enhanced Distribution enabled. Search engines and other sites can also tap into this feed to redistribute your content to an even wider audience.
To enable Enhanced Distribution, go to: Jetpack Settings > Engagement and then scroll down to Enhanced Distribution.
With this setting activated, all that remains is to write solid, helpful content with clear, concise titles, and add appropriate categories and tags to your posts. It also might help for you to like and follow other related sites in the WordPress.com reader, which you can get to by logging into WordPress.com and clicking on the option to “search for related content to your site.”