luzifer

This plugin is a replacement for the default “Top Ten Comments” because that plugin did not really do 
what I wanted. In the default plugin shows ten people who gave the most comments ever. But if an author left 500 comments two years ago and left the page for ever after this he would show up at the top 
position until another author would reach more than 500 comments.
In this plugin the top commenters score is calculated by using the time left since a comment and also 
the number of comments. So the author mentioned in first paragraph would slowly move out of the 
toplist and other comment authors posting more recently will get a chance to show up in the list.

WP-TopScoredCommentAuthors

This Widget shows your Top-Comment-Authors based on a score calculated from comment-age and frequency

Knowhalim

Snufel Marketplace

Snufel Free Guest Posting has made it easier than ever for webmasters to accept guest post from their frontend for free. This plugin features an intuitive setup – all you need is just 1 shortcode and you will be done. Moreover, you have full control over guest post regulations with adjustable settings to select the minimum word count of accepted posts. Adjustable settings let you specify the minimum amount of words for a guest post, ensuring that the content you receive is of a high standard. Get started today and get free, high quality content for your website.
Here is a summary of what you can do:
<ul>
<li>Easily acquire high quality content for your website from guest posts</li>
<li>Easy configuration for better quality control in the settings area</li>
<li>1 Simple shortcode for frontend guestpost submission</li>
<li>Interactive frontend form and built-in email notifications </li>
</ul>
<a href="https://snufel.com" title="webmaster marketplace" rel="nofollow ugc">Snufel</a> is an online marketplace for small business owners who would like to list their products or services for free. We encourage members to accept guestposts to build connections with other similar business owners and get high quality content in return. Likewise, we are accepting your product listings in our website as long as it provides value to our visitors. If you are interested to gain extra exposure in our marketplace, <a href="https://snufel.com" title="online product marketplace" rel="nofollow ugc">register an account</a> today!

Snufel Free Guest Posting

Accept guestpost from your frontend for free. It is very easy to setup, just 1 shortcode [free_guestpost_form] and you are done.

WP-TopScoredCommentAuthors vs Snufel Free Guest Posting