Index: app/views/account/show.rhtml
===================================================================
--- app/views/account/show.rhtml	(revision 2034)
+++ app/views/account/show.rhtml	(working copy)
@@ -5,7 +5,7 @@
 <h2><%= avatar @user %> <%=h @user.name %></h2>
 
 <p>
-<%= mail_to(h(@user.mail)) unless @user.pref.hide_mail %>
+<%= mail_to(h(@user.mail.sub('@','__@_'))) unless @user.pref.hide_mail %>
 <ul>
     <li><%=l(:label_registered_on)%>: <%= format_date(@user.created_on) %></li>
 <% for custom_value in @custom_values %>