Appraisals are not based on the domain name activity, they are based upon the shortness of the name, unique name and domain name extention - they are not based on traffic/hits - anyone who has had a domain name appraised would know this by reading the appraisal - obvisouly. They would also know that companies such sedo appraise way too high as they obviously would like the sale to go through themselves in order for them to obtain the comission. Therefore I understand your comment on the high appraisal - thats why Iv got a lower start price.
The forum posts and users have been removed for the sale of the domain, it was only ever used between myself and a few friends - the listing doesnt mention it was a popular or high traffic site (those two new registrations/members have signed up again since me removing everyone).
Many thanks