If you look on the home page of the forum, it says "Most users ever online was 764, 27-01-12 at 06:13." Seems a little unlikely!
The forum is still relatively new and hasn't managed to reach the critical mass necessary to attract new posters automatically. Ultimately, therefore, the forum needs to have something that draws people in such as using it as the hub for special offers or customer service queries and so forth. But that will take a large level of input from Dabs staff and it has to be said that internal interest really seems to have dropped off over the last 12 months (not seen Matt or Sam on here for ages). It's such a shame since it has been a far friendlier place than certain other more active fora!