Efforts to combat selective exposure in social media may also cause an increase in political polarization.  A study examining Twitter activity conducted by Bail et. al paid Democrat and Republican participants to follow Twitter handles whose content was different from their political beliefs (Republicans received liberal content and Democrats received conservative content) over a six week period.  At the end of the study, both Democrat and Republican participants were found to have increased political polarization in favor of their own parties, though only Republican participants had an increase that was statistically significant. 
Hi Maina, I have checked the social sites recommended by you. May be itis important to update on your article that Delicious no longer accepts bookmarks as it is now bought by Pinboard. Most of these social sites are being bought off and may discontinue their programs. May be you can even dedicate a new post for that. Otherwise, great piece of work there.
These may include fashion, beauty, lifestyle, sports, business, society, and many more that you will discover when you register. Advertisers select from these categories when creating campaigns and you will only receive a campaign invite if what they have selected matches your profile. If there is a match, you can participate in the campaign and earn money!
Eric Ehrmann contends that social media in the form of public diplomacy create a patina of inclusiveness that covers traditional economic interests that are structured to ensure that wealth is pumped up to the top of the economic pyramid, perpetuating the digital divide and post Marxian class conflict. He also voices concern over the trend that finds social utilities operating in a quasi-libertarian global environment of oligopoly that requires users in economically challenged nations to spend high percentages of annual income to pay for devices and services to participate in the social media lifestyle. Neil Postman also contends that social media will increase an information disparity between "winners" – who are able to use the social media actively – and "losers" – who are not familiar with modern technologies or who do not have access to them. People with high social media skills may have better access to information about job opportunities, potential new friends, and social activities in their area, which may enable them to improve their standard of living and their quality of life.
There are lots of social apps now, and sweetalk is a new discovery. For a long time, I have searched and tried different apps and most of the time, left disappointed and frustrated, until one day by accident, the sweetalk comes into my world. And here I would like to share with you all my feelings and experiences about this mobile app. It is probably the best free transnational social tool with the function of instant translation, supporting online translation in 30 different languages and can make me learn the foreign language easily during the chat. My English is ok, so I would like to choose to send messages to the people whom I am interested in instead of my mother tongue for the purpose of improving my English better while talking. And there are a lot of lads and gals there from all walks of life around the globe(later the screenshot will be pasted). You don’t need to pay money for the VPN service, which is really fantastic for those who are eager to make friends from abroad and learn foreign language as well without the extra trouble. Of course, you can talk with the friends from your own country and if you cannot speak English well or those you want to send messages to fail to speak English, then here comes another feature of sweetalk, that is the instant translation of sweetalk. And it is foolproof to use. All right, all of these are written during the work, a little busy now and I would end this introduction of sweetalk with some screenshots, if you like it, maybe you can give it try.
Mobile social media refer to the use of social media on mobile devices such as smartphones and tablet computers. Mobile social media are a useful application of mobile marketing because the creation, exchange, and circulation of user-generated content can assist companies with marketing research, communication, and relationship development. Mobile social media differ from others because they incorporate the current location of the user (location-sensitivity) or the time delay between sending and receiving messages (time-sensitivity). According to Andreas Kaplan, mobile social media applications can be differentiated among four types:
Mobile social media tools can be used for marketing research, communication, sales promotions/discounts, informal employee learning/organizational development, relationship development/loyalty programs, and e-Commerce. Other applications include marketing research, communication, sales promotions and discounts, relationship development and loyalty programs, and informal employee learning/organizational development is facilitated by the social media.
GeoCities was one of the Internet's earliest social networking websites, appearing in November 1994, followed by Classmates in December 1995, Six Degrees in May 1997, Open Diary in October 1998, LiveJournal in April 1999, Ryze in October 2001, Friendster in March 2002, LinkedIn in May 2003, hi5 in June 2003, MySpace in August 2003, Orkut in January 2004, Facebook in February 2004, Yahoo! 360° in March 2005, Bebo in July 2005, Twitter in July 2006, Tumblr in February 2007, and Google+ in July 2011. As operating systems with a graphical user interface, such as Windows 95 and Mac OS begin to emerge and gain popularity, this created an environment that allows for early social media platforms to thrive and exist.