You can add social networks to the Share plugin by adding it to the "config" Flashvar object and listing it in the "socialNetworks" Flashvar:
In the example below, the Pinterest social network was added to the Share plugin:
kWidget.featureConfig({ 'targetId': 'kdp', 'wid': '_243342', 'uiconf_id' : '21099702', 'entry_id' : '1_sf5ovm7u', 'readyCallback': onReadyCallback, 'flashvars': { 'share': { 'plugin': true, 'parent': "topBarContainer", 'order': 3, 'socialShareURL': 'smart', 'socialNetworks': 'facebook,pinterest,twitter,googleplus,linkedin', 'shareConfig': { "facebook": { "name": "Facebook", "icon": "", "cssClass": "icon-share-facebook", "template": "https://www.facebook.com/sharer/sharer.php?u={share.shareURL}", "redirectUrl": 'fb://feed/' }, "pinterest": { "name": "Pinterest", "icon": "http://projects.kaltura.com/amir/pinterest_blue36x36.png", "cssClass": "", "template": "http://pinterest.com/pin/create/button/?url={share.shareURL}&media={mediaProxy.entry.thumbnailUrl}/width/400&description={mediaProxy.entry.description}", "redirectUrl": '' }, "twitter": { "name": "Twitter", "icon": "", "cssClass": "icon-share-twitter", "template": "https://twitter.com/share?url={share.shareURL}", "redirectUrl": 'https://twitter.com/intent/tweet/complete?,https://twitter.com/intent/tweet/update' }, "googleplus": { "name": "Google+", "icon": "", "cssClass": "icon-share-google", "template": "https://plus.google.com/share?url={share.shareURL}", "redirectUrl": 'https://plus.google.com/app/basic/stream' }, "email": { "name": "Mail", "icon": "", "cssClass": "icon-share-email", "template": "mailto:?subject=Check out {mediaProxy.entry.name}&body=Check out {mediaProxy.entry.name}: {share.shareURL}", "redirectUrl": '' }, "linkedin": { "name": "LinkedIn", "icon": "", "cssClass": "icon-share-linkedin", "template": "http://www.linkedin.com/shareArticle?mini=true&url={share.shareURL}", "redirectUrl": '' } } }, 'topBarContainer.plugin': true } }); });