I have recently added an all-star plugin to my blog, which is called
Commentluv, which I have reviewed
on my blog.
The plugin, once activated, will try to pull and display the commentator's latest blog post under his comment. I personally find it a nice way to allow my commentator to "advertise" his last blog post on my blog (do you notice that we are also advertising our last posts on Bloggeries forum? Our last post is displayed right next to our name!)
I hope that the plugin will encourage more of my readers to click-through and leave me a comment, instead of just picking up my feeds in a feedreader.
BTW, I have also enabled "dofollow" on my blog, which means that for each comment left on my blog, the commentator actually leaves 2 link back to his own blog, and one of which is a deep link. I am sure, regardless of whether the links are "dofollow" or not, it is still a great way to increase the exposure to one's blog
