What do you think of alternatives which use "bump" (active posts with lots of recent comments rank higher) instead of voting based sorting?

Posted by busymom0@reddit | RedditAlternatives | View on Reddit | 6 comments

Reddit for example lets you sort by votes (top, hot etc). There's other alternatives which don't have votes (or do have votes but offer an alternative) where posts are sorted by posts with lots of active discussion via recent comments rank higher.

Which one do you think is superior? Would you use an alternative which did not having voting at all but was more based on active discussions/bump?