Comments are a wonderful thing to receive on your blog, with CommentLuv for WordPress and WordPress MU you can give something back to your community straight away by including a titled link for their last blog post or tweet on the end of their comment.
The plugin fetches the feed found at commenters site URL while they type their comment and extracts the last blog post title with link and displays it below the comment form. When they submit their comment, the last blog post link gets added on the end of their comment for all to see!
As a member of The ComLuv Network, you can register your site url and receive 10x the luv when you comment on enabled blogs and if you start a blog here, you can even add your twitter and digg accounts to your returned posts (or add more blogs, up to 5)
Download the zip file and extract the contents. Upload the whole commentluv folder to your WordPress plugins folder
Visit the settings page and check your desired output text or which badge to display.
Visit your site and enjoy the CommentLuv goodness.
Please submit a support ticket in the dashboard if you experience any problems with this plugin.