Ah, I just did my first power down payment last week. I was a little surprised it seems the only option is to power down your whole balance and then after however many weeks go by u want cancel it. The 'pick your amount' feature update will be good when/if it is implemented. I'm not sure why people tend to over-emphasize things like your power down. Probably just attention-seeking. I guess we all do it from time to time though probably. ha. This Steemit project has already had some pretty sweet success. Nice job for your contribution!