Rainmaker syncs contact data from Facebook, Twitter, and LinkedIn so you don't have to manually update your Google contacts or even go and lookup the contact information yourself.
Rainmaker helps you keep your contact information up-to-date by letting your contacts do it for you. Link your Twitter, Facebook, and LinkedIn accounts to Rainmaker and it'll update your Google Contacts with any new information. You can perform this action manually for individually contacts or allow Rainmaker to handle it for you automatically
http://rainmaker.cc/
