According to the Pew Research Center, a majority of Americans at least occasionally receive news from social media.  Because of algorithms on social media which filter and display news content which are likely to match their users’ political preferences, a potential impact of receiving news from social media includes an increase in political polarization due to selective exposure.  Political polarization refers to when an individual's stance on a topic is more likely to be strictly defined by their identification with a specific political party or ideology than on other factors. Selective exposure occurs when an individual favors information which supports their beliefs and avoids information which conflicts with their beliefs. A study by Hayat and Samuel-Azran conducted during the 2016 U.S. presidential election observed an “echo chamber” effect of selective exposure among 27,811 Twitter users following the content of cable news shows.  The Twitter users observed in the study were found to have little interaction with users and content whose beliefs were different from their own, possibly heightening polarization effects. 
First of all, thanks for sharing this list. It’s really useful, but it would be great to supplement it with some kind of statistics regarding the audience who is using each of these social networks. This statistics could be valuable for different kind of marketers, bloggers or business owners because with such statistics it would be possible to plan a strategy for business in different niches, like e-commerce, paper help online, any kind of services, or use it for the purpose of self-promotions for bloggers/website owners.
Maybe you've always made jewelry or art on the side and have wondered how to drum up interest and attention. According to Entrepreneur, this is now easier than ever, thanks to social media. Simply create a social media page that places an emphasis on visual media - think Pinterest, Instagram and even Facebook. Post photos as often as possible and share the images with as many people as you can. The source noted that all images should contain links to online sites where people can purchase your products, such as Amazon, eBay and Etsy.
Back in the day, one could create that straight path to the money by manipulating search engines through article marketing and link building. It created an opportunity for the site owner to bypass a critical element in the sales process and use what is called Right Now Marketing, where you could appeal to the wants of a consumer by feeding off of their conscious desire. If you were one of the top results in those searches, you didn’t have to worry about anything but building links to make money.
To get the most out of social media, make the relationships you build with it your end goal. That might sound a bit utopian for anyone who is grounded in more traditional and tangible business measurement and metrics, but take a step back from the bottom-line, ROI-seeking aspect to look at the big picture for a minute. The relationships built with customers are the foundations upon which other aspects of your business can and will flourish.
Ether is an interesting way to make money on Facebook. This website will allow you to add an app to Facebook and you can then give advice to people over the phone. If you’re good at giving advice, you can make some money. While this probably isn’t everyone’s cup of tea, if you’re into music, check out MusicBlaster. You can create a music store right on Facebook and then sell music from BlastMyMusic. For every song sold, you make 5%.
You can promote your work with platforms like Flickr or you can offer your work so people can use them for free on their websites. Once you are able to increase the number of people who are aware of your work, you can join paying sites like Shutterstock or iStockphoto. If someone takes interest in your work, he’ll be required to pay for your pictures before using them on his blogs.
Are you a popular vlogger? Do you post a lot of funny animal videos that go viral? You might be able to make some income by joining the YouTube Partner Program, in which you allow Google to place ads at the beginning of your videos. You then share in that ad revenue. Grace Helbig is a prominent example of someone who’s made a living off of creating fun YouTube videos and promoting herself on other social media outlets. Admittedly, your chances of becoming a YouTube star and getting rich off it are low, but if you’ve got an engaging personality, sense of humor or a unique perspective than the YouTube Partner Program may be an avenue worth exploring.
According to writer Christine Rosen in "Virtual Friendship, and the New Narcissism," many social media sites encourage status-seeking. According to Rosen, the practice and definition of "friendship" changes in virtuality. Friendship "in these virtual spaces is thoroughly different from real-world friendship. In its traditional sense, friendship is a relationship which, broadly speaking, involves the sharing of mutual interests, reciprocity, trust, and the revelation of intimate details over time and within specific social (and cultural) contexts. Because friendship depends on mutual revelations that are concealed from the rest of the world, it can only flourish within the boundaries of privacy; the idea of public friendship is an oxymoron." Rosen also cites Brigham Young University researchers who "recently surveyed 184 users of social networking sites and found that heavy users 'feel less socially involved with the community around them.'" Critic Nicholas G. Carr in "Is Google Making Us Stupid?" questions how technology affects cognition and memory. "The kind of deep reading that a sequence of printed pages promotes is valuable not just for the knowledge we acquire from the author's words but for the intellectual vibrations those words set off within our own minds. In the quiet spaces opened up by the sustained, undistracted reading of a book, or by any other act of contemplation, for that matter, we make our own associations, draw our own inferences and analogies, foster our own ideas... If we lose those quiet spaces, or fill them up with "content," we will sacrifice something important not only in ourselves but in our culture."
On social media, consumers are exposed to purchasing practices though peer sent, written messages. Learning through social media includes strategies such as "modeling, reinforcement, and social interaction mechanisms" all at the same time. A study, that focused on peer communication through social media, has revealed that communication between peers through social media is positively related to purchase intentions in a couple ways. First, is a direct impact through conformity. Second, is an indirect impact by stressing product engagement. Lastly, from this study, we learned that consumer-related communication between peers on social media has a positive relationship with product engagement. 
In addition to monetizing their influence and social networks, influencers can monetize their personal skills, whether it be photography, copywriting, creative direction, strategic consulting, styling or content creation. Influencers are typically business-savvy creatives who have used their skills to create a personal brand that ultimately drives revenue. So, brands often work with influencers by hiring them as freelancers. After all, influencers are professional content creators.
Even in the United States, the birth-country of Twitter, currently in 2015 the social network has 306 million accounts. Because there are likely to be many multi-account users, and the United States in 2012 had a population of 314.7 million, the adoption of Twitter is somewhat limited. Professor Matthew Auer of Bates College casts doubt on the conventional wisdom that social media are open and participatory. He also speculates on the emergence of "anti-social media" used as "instruments of pure control."
But when you are from a digitally native generation, quitting social media can feel like joining a monastery. Amanuel was recently asked by co-workers if she had Snapchat. “I said no,” Amanuel remembers, “and I instantly heard, like, gasps. It was like I’d revealed something disgusting.” She explained that she did have a Snapchat handle, but never used it. “Relief came out of their eyes! It was really weird.”
Digital products give influencers the opportunity to create something tangible that they can distribute and sell to their network to earn an income from their knowledge, influence and expertise. Fitness queen Kayla Itsines is a great example of an influencer empire built on digital products and influence, with her downloadable workout program Bikini Body Guide and her newly launched app Sweat With Kayla.