The widget area lists posts of the same category as the current post.
The plugin allows you to use the Recmnd service (www.recmnd.com - automatic recommendations) with your WordPress blog without coding.
Displays a list of posts similar from link sharing network Loptix.com
If the visitor comes from a known search engine, the widget grabs the used search query and shows internal blog posts that match that query.
Displays a list of posts similar to the current one based on content, title and/or tags.