burcot - 8:01 pm on Mar 15, 2011 (gmt 0)
Last time I tried moving a section to a new site like this it worked well, but that was back in 2003.
vordmeister, did you find that the new section ranked better after moving to a dedicated domain?
My gut feeling tells me it's easier to rank a site that is laser focused. At the moment the forum might dilute the shops ranking power and vice versa. You may even find the forum gains traffic after such a move.
Please keep us informed if you decide to take the plunge