Let users vote on the posts at your blog.
Vote-the-Post allows users to rate each post from one to five stars. Vote-the-Post will show the default rating (3 stars = average) unless one user has already voted, in which case the plugin will display their vote. The overall vote calculation includes the default value. The plugin is blogger-friendly. It creates values that are attached to the five star rating system which are fair and friendly.The five star system represents votes of "Below Average, "Needs Work", "Average", "Very Good" and "Excellent". By default, the plugin does not display the number of votes, making the plugin useful for both high traffic and low traffic sites/blogs.