PostRank, which tracks the number of comments, Digg votes, del.icio.us bookmarks and more, it will process any feed you enter and spit out feeds of All Posts, Good Posts, Great Posts, Best Posts and the Top 20.
Make it a portable standard of sorts, rank the posts and let me decide how much I want to read: on busy days, perhaps just the top posts; on days with more free time, all of them. Further down the line, I think we’ll also see increased personalization: rather than showing me the stuff that the world likes best, show me what my friends and similar people liked