Steam's Discount Rule Changes

It looks  as though these rule changes will prevent game makers from gaming the system.

• You can run a launch discount, but once your launch discount ends, you cannot run any other discounts for 28 days.
• It is not possible to discount your product for 28 days following a price increase in any currency.
• Discounts cannot be run within 28 days of your prior discount, with the exception of Steam-wide seasonal events.
• Discounts for seasonal sale events cannot be run within 28 days of releasing your title, within 28 days from when your launch discount ends, or within 28 days of a price increase in any currency.
• You may not change your price while a promotion is live now or scheduled for the future.
• It is not possible to discount a product by more than 90% or less than 10%.
• Custom discounts cannot last longer than two weeks, or run for shorter than 1 day.