We’re truly sorry if this came as a surprise.
As of March 2015, we revised our Terms of Service
announcing that we’re no longer able to offer credits
that do not expire, and any unused credit added to your
account more than 12 months ago will expire.
I still have over $80 of credit left, expiring this month. I understand why they are doing this, but it left a bad taste because of the small values involved, retroactive action and lack of communication (I didn't get this March 2015 email or any reminders since).This also creates a perverse incentive to burn the credits in a blaze of glory. I'm restraining myself, but I can only image the headache this will create across all users.