How does a PLN give power to messaging for an individual or community?

First of all, PLN is an open-source platform. The information you posted above will be displayed to the public, and you can also send messages to and from a user individually. These actions will become your digital identity. Based on these functions, PLN gives the power to message for an individual or community.

How does the use of PLN raise awareness opportunities in education?

On PLN, because people share knowledge and ideas, they also promote ideology. PLN can increase educational awareness because they are a platform for raising and solving problems. At the same time, they are knowledge-sharing activities in which different people such as professionals in different fields share their skills and knowledge.

What is the role of social media in education?

Although the role of social media in education is becoming more and more important, it is still at an imperfect stage. Even if there are sufficient educational resources on social media, their management is not perfect enough. Compared with traditional education methods, many times the resources we find cannot guarantee their correctness.

Reference:

Developing Personal Learning Networks for Open and Social Learning / Alec Couros- Chapter 6 – Page 128-129 & Page 137-138 in the PDF – (Page.114-115 & Page 123-124 in original text) 

https://www.aupress.ca/app/uploads/120177_99Z_Veletsianos_2010-Emerging_Technologies_in_Distance_Education.pdf