I'm migrating from a custom web site to MediaWiki a collection of pages which contain information for various games, including player lists with contact information (mostly email addresses). The old site only shows the email addresses (as mailto links) when a user is loged in; if you browse to one of these pages without being logged in, you see names only, without the mailto links. The purpose of this is to hinder address harvesters, the assumption being that they won't bother to get an account on our site.
Is there a way to do this with MediaWiki?