Those companies that are able to exceed the expectations can either bank their allowances for future use or sell them to other businesses that are unable to meet their obligations.
We anticipate that the rate of growth in mobile users will continue to exceed the growth rate of our overall MAUs for the foreseeable future, in part due to our focus on developing mobile products to encourage mobile usage of Facebook.
Companies that emit less than their allowances permit, or can reduce emissions more cheaply than their peers, can either bank their surplus allowances for future years or can sell them to companies whose emissions exceed their own allowances.