For most blogs, 80% of the visitors are new visitors : So the major chunk of your work for improving your blog traffic should be ideally concentrated on converting your first time visitors to your loyal regular visitor. Below are few techniques for the same.
Comment Relish – This plugin automatically sends email to the user who add comments on your blog and also includes a link to subscribe to your blog and also a small not of “thank you”. This has worked for me pretty well and have had enough success to convert my first time visitors to subscribers. Another plugin that could help you for the same is Comment Email Responder.
Another very effective comment management plug-in is DisQus comment management system found at the link here
Hope you enjoyed the small tip that could make a BIG difference.