Your store is loaded with places where you can enter keyword-rich meta data to improve the way search engines index your site. While setting up your store, you might have entered preliminary meta data, with the intention of finishing it later. Over time, you can fine-tune the meta data to target the buying patterns and preferences of your customers.
The meta title appears in the title bar and tab of your browser, and search results listings. The meta title should be unique to the page, and less than 70 characters in length.
Meta descriptions provide a brief overview of the page for search results listings. Ideally, a meta description should be between 150-160 characters in length, although the field will accept up to 255 characters.