Take an ordinary blog post, highlight a passage you want to comment on, and have it appear on the comment form without having to scroll all the way down. Or mouseover a comment, then show replies to it as well as all other comments made by that person. That’s all in the spirit of Encouraged Commentary, which is a jQuery-powered script by Jim Jeffers.
Of course, what Jim did may seem more subtle an achievement than what designers and developers try to come up with, or what the ordinary blog visitor would appreciate.
But it’s one more contribution to that great experience. I’ve talked about Issuu last time, so this counts as number two. To that “wow, I had a pleasant time commenting on your blog today, Jim, you’ve made it so easy!” kind of feeling.
I hope that I encounter more examples of this—not just in commentary, but for every other aspect of a website.