LinkedIn has released its next expansion with the new iPhone app LinkedIn Contacts. The app collects your contacts from your phonebook and services like Gmail, Yahoo, and Evernote. It then uses that information to create a sort of personal assistant which organizes your interactions with business partners across your services.
When you look up a contact you're shown your "Relationship"; email exchanges, personal messages from LinkedIn, calendar appointments, and other interactions. You can filter your contacts based on parameters like companies, job titles, or locations