Acknowledgements

1.2.2.1 Definition of EWOM

With the emergence and spread of the Internet, unlike traditional communication techniques, it began to find the communication between individuals on a digital platform. Web-based applications known as Web 2.0 have started to expand on online platforms. In this way, consumers share their ideas with other consumers and affect purchasing processes, and here come the words of Electronics. The Hootsuite Social Media Management Platform and the "Socialism" media agency report in 2017 show that the number of Internet users in the world has increased by 10% and around 50% of the world's population is around 3 billion 773 million in 2016. As an internet user. At the point when the Internet is broadly utilized by cell phones, individuals have started to invest much time in online life. There are similar platforms here. Those who have a high position in the media should not only have media owners and large companies but also the consumer role. There are cases where consumers have a say in certain situations. In about «mouth-to-mouth marketing" (Phelps, Levis, Mobilio, Perry and Raman, 2004). In other literature "online WOMM " (Duan, Gu and Vhinston, 2008). Also included in here Helme (2000). Although these names were different, they meant the same.

There are some advantages that EWOM has created, but relationships there may also cause disadvantages. This refers to:

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  Although EWOM's rapid dissemination is preferred, for example, consumers may face certain risks as a result of rapid dissemination of any confidential information.
  
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  - The confidentiality of some data during use of EWOM creates insecurity in the eyes of consumers.
  
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  - The rapid dissemination of information slightly weakness the control factor and it is difficult to control the process.
  

- In addition, deliberate information is spread here and incorrect information is given here.