Visordown
DuN occasionally, haven't been there for a while though
Ducati Racer
Throttlemonkey although again, haven't been there for a while
Motoforum, more of a browser on there though
DD forum, again haven't been there for a while
I've posted on londonbikers a few times
Keith Codes forum, again only really a browser on there .. good source of info though
DSC is the main forum for me