Some of the most used social media channels are:
Blogging Platforms: Blogger, WordPress, Tumblr , Medium, Ghost, Squarespace, etc.
Social bookmarking sites: Digg, Jumptags, Delicious, Dribble, Pocket, Reddit, Slashdot, StumbleUpon, etc.,
Social networking sites: Facebook, WhatsApp, Instagram, LinkedIn, Twitter, Google+, Skype, Viber, Snapchat, Pinterest, Telegram, etc.
Video Sharing sites: YouTube, Vimeo, Netflix, Metacafe, Liveleak, Ustream, etc.