CNN.com is not, and should not be, overwhelming Reddit.com with links. Social news services like Reddit were never intended to be “used” by news organizations. Reddit was designed to be used by ordinary people with similar interests, who use subreddits to find each other. If CNN started having major input in what Reddit was voting up or down, I would very quickly lose interest in Reddit.
Now, CNN can and does have a button that users can access to automatically post information onto Reddit, and that’s fine. But at least this way, Reddit users get to choose what stories are interesting, important, or weird enough to make it to the front page. And most news links on Reddit do not come from CNN.com, they come from everywhere.
I would argue that the one thing the internet needs least of all is for corporations to have more control over user generated responses. The last thing we need is a mere illusion of democracy.