Need Mailchimp and google docs API programmer to do by schedule (automatically, once a day):
1. import google docs spreadsheets into 1 mailchimp list.
Spreadsheet contains up to 12 sheets, each sheet need to be importer to exact one group/subgroup in the mailchimp account.
2. synchronize by schedule 1 field content among different lists in mailchimp
3. synchronize by schedule 1 field content among different sheets inside one spreadsheet in google docs