EboBirthday Contact Sync 2.0
EboBirthday Contact Sync
This is a plug-in for EboBirthday. It will synchronize the birthday and anniversary data on google.com/contacts (or contacts.google.com) with EboBirthday's database in both directions.
You need EboBirthday installed for this to work (you will be prompted if it's not on your system).