You might want to consider the volume in which these other products are sold - tens of thousands a month. Paul may wish to consider his network and server bandwidth, and everyone else may wish to consider the effect on the nature of the BBS if the userbase increases by an order of magnitude.
I think it will be an interesting experiment to find out whether the empeg BBS principles can transfer to a high volume product (I would certainly love to see a more intelligent alternative to the MP3.com message boards!) but I'd hate to see the car player community get trampled in the process.
Many new car player owners are going to show up over the next few months, but the product remains a high end gadget that will attract people of a certain mindset and I'm sure the BBS will be none the worse as a result. Maybe I'm over reacting, but I think the situation could be different for higher volume products.
Rob