If you have a Rogers Wireless CA$30 6GB data plan (a past promotion that is no longer available), Rogers will soon let you share it with other devices but with a small catch. For each additional device (to a maximum of 4) that you decide to share the plan with, you will need to pay an additional CA$30 per month.
Rogers is also limiting secondary devices to tablets, Rocket Sticks, and the iPad. Specifically excluded are smartphones and the Rocket Hub.
One more thing: There will also be a CA$35 activation fee for each device.