Affiliate Program 'Network' Site?

I was wondering what you folks thought of this, as we're working on 3 new affiliate programs at the moment, in addition to Condom Cash and Tube Tender, do you think it would be an idea to promote each of these sponsor programs on an individual basis or, setup some kind of 'network' main site and focus on driving affiliate traffic to that one site?

I can think of several benefits and pitfalls to both but, my main concern is that by promoting each program individually, will not have as much of an effect on marketing as one larger primary network site would.

Your thoughts, should multiple affiliate programs owned by the same company be grouped together or marketed seperately?

Regards,

Lee