To allow site users import contacts from Facebook, follow these steps:

1. You should create an application here:
https://developers.facebook.com/apps/

2. Once application is created you should do the following:

• Fill in the 'App Domain' field. Type your website domain (like yourdomain.com, without http: and www) and press Enter, that should wrap text in a blue rectangle.
  

• Scroll down where it says 'Website', click on it and paste your site URL (with http: and www if applicable) into the Site URL field.
  

• Scroll down where it says 'App on Facebook', click on it and fill in the 'Canvas URL'. It should look like http://yourdomain.com/contactimporter/fbcanvas/ where yourdomain.com is your site URL.
  

Pay attention to the App ID and App Secret (marked with red), they will be used in the step 3.

3. Go to Admin Panel > Plugins > Installed Plugins > Contact Importer > Settings section. Fill 'APP ID' with value from step 2.

Installation completed.

To allow site users import contacts from Google, follow these steps:

1. You should create an application here:
https://code.google.com/apis/console/

2.On the page for creating a new application select the API Access from the left menu and click the Create an OAuth 2.0 Client button

3. Enter a product name, upload logo and click Next.

4. Select the Web application option and Click the More options link.

5. a. Enter your site URL with the google/oauth string in the end into the Authorized Redirect URIs field. It should look like this: http://yoursite.com/google/oauth

b. Enter your website URL to the Authorized JavaScript Origins field.

6. Click the Create Client ID button.

7. Then copy the Client ID and Client secret and paste it into your Admin Area > Plugins > Installed Plugins > Contact Importer plugin > Google App Settings section.

Installation completed.