What are these titles about?

Everyone has a title within the forum. You will notice the title below the Display Name in each post. Some titles are automatically assigned based on the number of posts a user has made, and some titles are assigned by the forum owner to denote official representatives of the company or other VIPs in the forums.
0 member25 member50 member100 member200 enthusiast400 addict700 old hand1200 veteran1600 Pooh-Bah2500 Carpal Tunnel