That's fine. Now you know. The idea is likely more relevant when there are fewer users. But basically it lets a user post a large amount of content if they want to without sliding the site. It allows us to make use of their bounty of content for longer.
Neat feature. Sounds better than 4 simultaneous crossposts. I know a few Saidit users that could've benefited from that feature instead of making it annoying. I doubt they'd've used it. For my use case, it'd be useful for posting a lot of music when I'm so inclined and have it posted at random times without cluttering the front page.