The way I copied facebook contact information was to sync to yahoo contacts, then export yahoo contacts, then import into google contacts.
I'm not sure how this would work on/in the mobile ecosystem, but I'd have to imagine that getting on your desktop/laptop computer for a few minutes would be worth the effort of backing up the information.
I'm not sure how this would work on/in the mobile ecosystem, but I'd have to imagine that getting on your desktop/laptop computer for a few minutes would be worth the effort of backing up the information.