If you have chosen to conceal people's emails on the forum you may not have noticed that at the top of each forum the names of the moderators lead directly to their email address, this can make them vulnerable to spambots that are released on forums.
To solve this you can link it to their Profile page.
In forumdisplay.cgi
FIND:
and REPLACE with:
That should do it!
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If you would rather have it link to privatemessages, then it would be more like:
But I have not tested that.