I want to make sure that my contributions will benefit the community the time of my account deletion, not just Stackexchange so I would like to make it clear like Steve Jessop here:
All my original contributions to StackOverflow are hereby placed into the public domain. If this is not legally possible, then anyone receiving a copy of them by any means is granted a non-exclusive perpetual license to use, distribute and modify them, and to distribute modifications, under any license or none, with or without attribution to me. Please note that this license applies only to my original contributions - quoted material and edits by me to existing material on StackOverflow are not my creations and I cannot grant rights in them.
Shortly, I am getting fed up to this: they drive you out of the site and then they get all rights over your material after anonymization, good ploy. So
How can I specify the license with anonymized account?