Had never read it and finally did key take aways from is below: (copied from the page)

Point #3 and #4 would love to hear from heavy Netflix users. Also, this makes the case for more hosting of local content and peering.

Zuku Fair Use Policy system is a tool to monitor and control Zuku’s international bandwidth capacity with the intention of giving all customers fair access to the international bandwidth capacity: it limits the speed for heavy international downloading during peak usage hours. It DOES NOT limit the total international data volume, which an end user is able to download per day or per month using Zuku, and it DOES NOT limit or control the speed or data volume at which customers download all localized content.

How does it Work?

1. On working days the peak usage hours are mainly in the late Mornings until early evening hours (e.g. from 11am to 10pm) and on Weekends and Holidays, it generally extends a little earlier in the morning to until Midnight..
2. The Zuku Fair Use Policy system continuously monitors the consumed volumes per customer in
Megabytes.
3. During peak usage hours the Fair Use Policy system reduces the speed for those customers who have already consumed large volumes (in Megabytes) during the respective day and month.
4. The more volume a customer has already downloaded during the day and month, the more his speed
priority is decreased during peak usage hours.
5. During the remaining non-peaks hours of the day the customer’s speed priority usually has only limited impact on his access speed.
6. Every month on a set date, the volume account of all users is set to zero, i.e. the speed priority is reset

Regards

Muga