Topic on Extension talk:ConfirmEdit

The one thing that would distract spam is to prevent them from publishing their URLs. There are several ways to accomplish this, but for new users, there needs to be an extra hook for URLs. This hook shouldn't be a captcha but an approval process with other higher ranking members. It could be as simple as a moderated page or as complex as prompting ranking members to approve randomly using the message feature. If there was a MW option, I would even be okay with blocking URLs until new users are promoted or request the URL to be added to a whitelist, we just need MW to add the URL hook to the permissions.

Sounds like a feature request for Extension:FlaggedRevs.