Chris Klosowski

Using the Google AdSense Section Targeting will help the ads being displayed be more releveant to the content on your pages. This plugin lets you determine the areas of your site that will be used to select ads. You can find out more about Section Targeting at the following URL:
<a href="https://www.google.com/adsense/support/bin/answer.py?hl=en&answer=23168" rel="nofollow ugc">What is section targeting and how do I implement it?</a>

Better AdSense Targeting

Get better targeted ads from Google's AdSense with this plugin. You can also have Google's AdSense Ignore specific sections of your post by  …

Pranav Rastogi

Geo-Targeting (GEO target) content based on user?s country.
Features:
<ul>
<li>Shortcodes for use in content.</li>
<li>Show the content to users in multiple countries.</li>
<li>Hide the content from users in multiple countries.</li>
<li>Show a note to users who are not able to see the content.</li>
<li>PHP Template tags for use it templates.</li>
</ul>
More features will be added in future versions.
<h3>Usage</h3>
<a href="http://pranav.me/plugins/gt-geotargeting/" title="GT-Geo Targeting - Usage" rel="nofollow ugc">Geo Targeting – Usage</a>

GT-Geo Targeting

Ability to show content based on country. Show content if a visitor is from a list of countries, show content if a visitor is not from the list of countries, show custom message to visitors, and more!

Better AdSense Targeting vs GT-Geo Targeting