What do you call a person who is always noisy on the Internet?
Noisy, in a way, that he always post on Facebook or Twitter anything he did like it is his diary, always commenting other people's posts, retweets every minute or hour, etc. An attention whore or something. Is there a specific word for this kind of personality?
By the way, I didn't mean nosy or nosey.
Potentially an oversharer, but the word often means sharing details about your life that are either embarrassing to you or discomfiting to others.
overshare -
to disclose too much (personal information) or too many (details) about oneself
It does not, alas, mean that guy that just has to share his 2 cents about everything.
An "attention whore" is a widely-used term for this, someone who must be the center of attention, and does things and causes situations which puts them in the center of attention, into the spotlight. Of course, it is not something you would say to another person, as it is considered an insult. It conveys the same meaning regardless of whether or not the person is online, and so in this way if you are seeking an exclusively-online term -- or a term which is not insulting -- this may not fit your circumstances.
He may have
logorrhea
- pathologically incoherent, repetitious speech.
- incessant or compulsive talkativeness; wearisome volubility.
And if the above is tempting but not quite a perfect fit, I'd like to humbly submit the not-yet-a-real-word "blogorrhea" for your specific case.
Unfortunately of course this is a name for his condition, not for him himself.
You could use social media addict.
It's doesn't fit the description exactly, as a social media addict doesn't necessarily overshare publicly (eg, you can have social media addicts who are just messaging their friends, or browsing instagram).
eg.
Bob is a bit of a social media addict - he's liked twenty pictures and commented on ten of them in the last hour alone.