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.

Upland

The Second Street Plugin allows you to embed your Second Street content on your WordPress site. Get the Shortcode the specific Contest, Interactive Content, or Signup Widget you would like to embed from the Second Street app at <a href="https://partners.secondstreet.com" rel="nofollow ugc">partners.secondstreet.com</a>. After retrieving your Shortcode, paste it into the page content area of the WordPress page you would like it to appear on.

Second Street

Embed your Second Street Promotion on a WordPress page using the Shortcode generated in the Second Street Partner Tool.

Genesis Promotion Box vs Second Street