>Keeping data for all subscibers in common tables will make life a lot easier for reporting. For example, what if you want to know the total value of all orders for all subscribers for a given month? Much easier if the data for all subscribers are in the same tables.


Maybe, but, as a customer, I wouldn't like that other customers can see at my data via SQL. I think that , for security reasons, separate data groups will be the way to go.