That's an interesting idea, thanks for the suggestion! We have considered various possible solutions like user levels of privilege on the site, etc. to help prevent new spammers from adding spam and removing good links, which I'm assuming is the reason you're suggesting this idea.
We are working on a lot of changes to the site coming in the next few months including some adjustments to users, so we'll continue to work on it all with the spam issues very much under consideration.
Thanks again for your suggestion and feel free to share any other thoughts you have on this issue or anything else!