Prepare your BarCamp using your own way but just online. Size your facility needs as the participants numbers grow.
Let your attendees subscribe using a form you can define and let them propose talks and topics even before the starting date.
Use the online interface BarCamp Rocks provides to avoid long, repetitive tasks such as talk voting and scheduling conflict checks.
Use social networks to better publish your event online, enable networked attendees to follow your event.
Track your attendees through their social profiles, being able to improve feedback and marketing revenues.
Make the whole experience persistent through a common, consistent interface that will enable you to post schedules, slides and videos.