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Most of the time I encounter it in form of excessively sharing their personal life details through social media without any obvious goal like money or popularity.

I have an impression that I've heard this word before but somehow can't find it.

1 Answers1

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It's probably not what you're looking for, but over-sharer might fit the bill. To overshare means

to disclose too much (personal information) or too many (details) about oneself

(Dictionary.com)

This isn't limited to social media, but the term share is commonly used in that context.

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