Yep, sounds custom - when I set up our forums, I wanted the ability to add meta data, so I added similar fields. For displaying them, something like this should work (put them in the head area of forum_view.html):
<meta name="keywords" content="<%forum_keywords%>">
<%endif%>
Repeat for the description tag (changing the variable names to whatever your fields are named).
Code:
<%if forum_keywords%> <meta name="keywords" content="<%forum_keywords%>">
<%endif%>
Repeat for the description tag (changing the variable names to whatever your fields are named).
