WordPress Post Thumbnails (also known as Featured Images) are a great feature that was added to WordPress in version 2.9. Though not “required” and often times not even utilized, there are certain instances where forgetting the post thumbnail will break a layout or the functionality of your page.
For example, I recently developed an eCommerce site where we were using the WP Featured Image as the default image for the shopping index page. There were often times when the client would be adding a large quantity of products at once, and would forget to select the post thumbnails. Or, another senario…let’s say that same client has a product they want to list, but there is no image available, for whatever reason they would like to list the product and come back to it later.
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