Yeah, I was always waiting for prediction engines to kick into high gear on aggregators, recommending posts, subs, or even filtering comments based on what you seem to like.<p>They could also harvest data on how often people click through a headline, how long they scroll through a comments page, how long until they move to the next item...<p>So in addition to having more voting options on an aggregator, I also want a separate aggregator that&#x27;s purely driven by behavioral data, like average clickthroughs and time on page.