Forum Moderators: rogerd
Unless the forums have the same ownership, this is almost certainly the case. Forums generate a lot of content, and are tempting targets for scrapers. (See Attack of the Robots, Spiders, Crawlers, etc. [webmasterworld.com]).
Most forums post copyright notices, and even if they don't their content is still protected by copyright laws. If you need to seed your forum, enlist some helpers and start the conversations yourself. (See also [webmasterworld.com...] and other articles in the Library.) Good luck!