Heath Row describes an interesting idea:
What I would like to be able to do is create a Web page adjacent to my blog that compiles ongoing posts from blogs that I frequent — something akin to LiveJournal’s Friends post aggregator, which handles LiveJournal posts from people you link to as friends as well as outside RSS feeds… or Stephen Downe’s Edu_RSS, which collects feeds from sites that he’s identified as appropriate for that aggregation page.
Think blogroll or bookmarks, only with recent posts all on the same page, including links back to the original, independent blogs. You could add and remove sites that are part of the syndicated compilation as your reading roster changes, and posts would be displayed in chronological order regardless of their source sites.
Think of this as a parallel blog page, a reflection of your blog, a “MirrorBlog”. We are doing something like this in BlogStreet.