How do I add a contact? (iPhone)

You can add Palringo contacts or contacts from any of the supported IM services.

To add a contact all you need to do is open your contact list, tap the + button in the top right corner, select the service the contact is on (you will need to have an account set up for this service) and then enter their id/username or email address. They will be required to confirm that you can add them to your contact list and may not appear until they have done this.