Possible Duplicate:
Issues in fetching address book to fetch Gmail, Yahoo, Hotmail, Twitter and Facebook contact list in Ruby on Rails
I'm creating an app that people can add their friends to and I want to help them find them via gmail (like that facebook, twitter or foursquare do). I saw the google api for it and im pretty convinced that I need the "Portable Contacts API". My question is how do I do that in Rails?
Google provides no way to automatically sync contacts between two different Google accounts. Instead, you'll have to perform a manual two-step process where you export your contacts from one account to a comma-separated values (CSV) file, then import contacts from that file into your second account.
You could use OmniContacts: https://github.com/Diego81/omnicontacts
Diego
You can take a look at:
https://github.com/glennfu/contacts
You should be able to import Yahoo, Gmail, Hotmail, AOL and Plaxo.
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