[Adam Harley (Kawauso)]

This might be a cleaner solution

<?php

switch ( $topic->forum_id ) { // Ignore these forums

case 29:

case 30:

case 18:

case 15:

case 4:

continue 2;

}

?>

or for including only certain forums

switch ( $topic->forum_id ) { // Include only these forums

case 29:

case 30:

case 18:

case 15:

case 4:

break;

default:

continue 2;

}

?>

but using that if statement, you need to change the line

<?php if( $topic->forum_id != 29 && $topic->forum_id != 30 && $topic->forum_id != 18 && $topic->forum_id != 15 && $topic->forum_id != 4 )

and you can find the forum ID from looking at its Edit URL in the admin panel (under Forums)