Oversharing in natural social networks is penalized heavily, and for good reason - with too much noise and little signal, people get overwhelmed, fear missing out, and cannot agree on anything. Communication becomes a detriment and a chore to the social group. The social group expects everyone to think before they speak, not just blabber endlessly, which is healthy.
Also, replacing the "Like" button/signal with a "Thanks" signal would be good because it'd be better to build a social network based on what people find helpful rather than on what people approve of. I think this was originally Jack Dorsey's idea, not my own.