To aid in the smooth functioning of societies. It fosters great understanding and cohesion between people of different cultures. It rubs off all potential offenses of people because of an overstepping on their cultural and religious beliefs, values and norms in their societies. It is a powerful means of achieving the global peace that the world has long thirsted.
Cultural awareness stabilizes individuals and groups, it ensures their authenticity and survival in a multicultural environment. It inspires an sustains creativity and ensures a group can continue impacting the world by its sustaining its cultural background; it also inspires creativity and modulates cultural change. Your references are in millions: Mudimbe, Fanon, Foucault, Rodney, Plekhanov, Jameson, Mazrui...
One good thing about social media is the easy to access to data gathering and materials. But in wider perspective, if a platform like Research gate is considered as a social media, which is it, then the free access to materials will lead to the rise of open access journal [with negative impact on the purse of the researchers, as they will pay for publications] and kill the closed access journals [which have negative impact on the users as they pay to access papers but beneficial to researchers as they don't pay to publish]. So, it will come with its advantages and disadvantages