<?php

$tea_content = array(
    array(
        'type' => 'social',
        'title' => 'Big Brother is watching you...',
        'id' => 'my_social_field_id',
        'description' => '...Or not!',
        'expandable' => false, //disable the "Add social networks" button
        'default' => array(
            'facebook' => array(
                'display' => '1',
                'label' => 'Become a fan',
                'link' => 'http://www.facebook.com/takeatea'
            ),
            'twitter' => array(
                'display' => '1',
                'label' => 'Follow us',
                'link' => 'https://twitter.com/takeatea'
            ),
            'instagram' => array(
                'display' => '0',
                'label' => 'Take a shot',
                'link' => 'http://instagram.com/takeatea'
            ),
            'rss' => array(
                'label' => 'Subscribe to our feed'
            ),
        ),
    ),
);
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Retrieve data

Using the _get_option('my_social_field_id') method, you'll get (with a json_encode() display):

{
    "facebook": {
        "display": "1",
        "label": "Follow me - Abe -",
        "link": "https:\/\/www.facebook.com\/LaPreuvePar5"
    },
    "twitter": {
        "display": "1",
        "label": "Tweet me - Abe... -",
        "link": "https:\/\/twitter.com\/LaPreuvePar5"
    }
}

The 29 networks

Here are listed all the 29 available networks that you can add.
Note that since the 1.5.2.16 version, you can add your own social network.

LogoNetworkKey to use
RSSrss (with label only)
Behancebehance
Bitbucketbitbucket
CodePencodepen
Deliciousdelicious
DeviantArtdeviantart
Dribbbledribbble
Facebookfacebook
Flickrflickr
Foursquarefoursquare
Githubgithub
Gittipgittip
Google+google-plus
Gratipaygratipay
Instagraminstagram
LastFMlastfm
LinkedInlinkedin
Pinterestpinterest
Redditreddit
Skypeskype
Soundcloudsoundcloud
Stumbleuponstumbleupon
Tumblrtumblr
Twittertwitter
Vimeovimeo
Vinevine
VKvk
Weiboweibo
Youtubeyoutube