The City of Genius Information Factors

When I seek validation through something I post on social media and that little red flag starts popping up to notify me of each person giving me attention. Why does it happen on my social media profile. Is it some kind of reward from social media? Even I feel better and expect to keep coming back for more. The next time I need to feel approval, I'll return to the source that poured it out last time, and the cycle of reinforcement continues.