fmtc

The FTC requires that bloggers, affiliates and publishers disclose their relationships with merchant if they earn money 
from links within blog posts. This plugin will add a simple FTC-compliant disclosure statement at the beginning of all 
blog posts.

FMTC Affiliate Disclosure

Add FTC-Compliant Disclosure statement to the beginning of your blog posts

jbwagner

The Disclosure Picker makes complying with the FTC blogger guidlines about material connections easy.
In plain English, you can pick from a dropdown on each post or page if you need to disclose affiliate links, review copies, etc. There are 5 different “disclosures”, which are modified versions of the ones in <a href="http://michaelhyatt.com/five-ways-to-comply-with-the-new-ftc-guidelines-for-bloggers.html" title="Five Ways to Comply with the New FTC Guidelines for Bloggers" rel="nofollow ugc">Michael Hyatt’s post on the subject</a>. You can also choose to display the disclosure above or below the content.
The section comes pre-styled with CSS. If your theme uses Twitter’s Bootstrap, it uses the <code>.well-small</code> class by default. The styling will work with or without Bootstrap.

Disclosure Picker

Adds a disclosure, chosen on a per post/page basis, to a post/page either below the content or above the content.

FMTC Affiliate Disclosure vs Disclosure Picker