[thuanao]

For most people y > x. You're choosing what posts to see even if the feed is chronological. For a chronological feed, x is the most recent posts you happen to see when checking your feed reader. And x will skew towards people who post at the same time of day you tend check your feed reader. People who post more will also take a larger distribution of x.

Any algorithm would seem to be an improvement on that, right? For example, an algorithm that sampled evenly from all sources. That would at least mean x was distributed across all your sources, so people who post more didn't crowd others out.