I'm the admin and theres no way for me to prove it, however if you could pull the ip ads of the people posting you'll find at least 3 different ips from different people, I can't say since I myself don't know who some of the guest posts are
Otherwise, I'm not gonna further argue this point since there's no way for either of us to prove it, but if you see our forums you'll find some very dedicated members
Thanks guys