zoolley

Zool Viral Ads is a content recommendation platform which enables blog owners to display ads or related blog posts. The ads are dynamically sourced from the Zoolley.com system and it can be a good source of revenue.
A few notes about the sections above:
<ul>
<li>This plugin tracks the IP of the visitor with the help of 3rd party code from geoplugin.net and this information is then sent to zoolley server to help us to place country based content recommendation.</li>
<li>This plugin does not requires any password but you need to get a free Zool Viral Ads Account, so as our system can identify the traffic sent by you. Once you install the plugin then the recommendation content is displayed automatically to the visitor based on this geographical location.</li>
<li>The images and the content loaded in the recommendation area is directly sourced from zoolley.com server.</li>
<li>These images are dynamic and we often update the images based on our advertiser’s demands.</li>
<li>Once the visitor clicks on the recommended content then it is redirected to the zoolley server (so as we can calculate the number of hits from your and show your earning details on your Zool Dashboard) and then the visitor is further redirected to the main content site where visitor wants to go.</li>
<li>This process takes microseconds and will not slow the speed of your website or the visitor flow to the content site.</li>
<li>We believe in respecting your privacy and the information and data collected will be used only by us for the purpose of better content placement. </li>
<li>We follow the guidlines of governing bodies of each country and never display any restricted items on your blogs via our plugin.</li>
<li>Our content may contain “Non commercial”, “Advertorials” and “Advertisements”</li>
</ul>

Zool Viral Ads

Display popular content to your users from your own site and/or from our sponsored partners, increasing visitor engagement and revenue.

husani

Searches various data sources (Google Blog Search and Twitter) for posts related to your content and displays links/summaries on your page or 
inside your posts. These links and summaries can be displayed anywhere and any way you wish — below your post, in a sidebar, etc. With the 
magic animation power of jQuery, SMIRC content can be hidden until a user clicks the customizable header.
SMIRC performs related content searching (at least in this version) by creating RSS feed URLs for the various data sources. The RSS feed is 
parsed and converted into XHTML for display in your blog.
All PHP is separated into logical classes and files, and all XHTML is standards-compliant. Lists of links, authors, and summaries are built 
using standard UL and LI tags, and can be modified to fit your theme via two CSS files contained within this plugin.
SMIRC is released to the WordPress community under the GPL. Please feel free to modify as you see fit, and if you find this plugin useful, donate 
to the author. All feedback is welcome at wordpressplugins@husani.com, and you can visit the author’s websites at http://www.husani.com and 
http://www.evb.com.
UPDATE FOR v1.1: Fixed a bug with setting header text.

Social Media Integrated Related Content (SMIRC)

Like trackbacks, but not -- this plugin searches and displays content related to your CONTENT, not just posts that link to yours.

Zool Viral Ads vs Social Media Integrated Related Content (SMIRC)