There are only a couple of things needed, and really only one of them is essential, but the second is greatly appreciated. The first and most important being a notification mechanism to updated comments since the last comment. Meaning, if my comment to your post garners any responses, I want to know about it without having to spend time continually clicking back through your page. Not only would that waste my time, but it would artificially inflate your stats. Neither of us wants either of those things. So please take the time to add a plugin, or some other tool, that enables this capability. Else, don’t expect too many comenters to leave words on your posts.
The second, and maybe less important but still appreciated feature, is closing out the comments after so many days, be it 15 or 30, it doesn’t matter too much, but it definitely needs to be something reasonalbe. Receiving a notification a year or so more past the post date isn’t terribly relevant. Typically these trail off, so it’s not as big an issue, but the more posts to which you comment, the more likely you are to receive unnecessary notifications. At some point we need to stop talking about old topics. Thankfully WordPress 2.7 was smart/kind enough to make this option standard, with a default setting of 14 days. Very handy.
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