Ron Rennick

Uses a custom post type to allow editing of the promotion(s). The most recent published promotion post by date is shown below single posts.
Some (CSS tips)http://wpebooks.com/free-plugins/genesis-promotion-box/ for your child theme.
Requires the Genesis Theme Framework.

Genesis Promotion Box

This plugin allows you to add a promotion box after a single post in Genesis.

Tomasz Dobrzyński

page12000

KudaniCloud is the leading content marketing platform for small businesses. 
You can create and curate interesting content that will increase your traffic and leads.
KudaniConnect helps users connect KudaniCloud to their wordPress blog with ease. 
Using KudaniCloud you can:
<ul>
<li>Plan your content using inbuilt editorial calendar</li>
<li>Import all your blog feed subscriptions</li>
<li>Create dynamic images that get attention</li>
<li>Generate prevent headlines to get clicks</li>
<li>Automatically promote yours and other peoples content to social media</li>
<li>Built in workflow and authorisation is perfect for teams.</li>
</ul>
learn more at: <a href="https://www.kudani.com/?utm_source=wordpressorg&utm_medium=description&utm_content=plugin&utm_campaign=version1" rel="nofollow ugc">www.kudani.com</a>

KudaniConnect

KudaniConnect helps users connect KudaniCloud to their WordPress blog with ease.

Genesis Promotion Box vs KudaniConnect