What do you call who writes comments? Commenter or commentator?

technical meaning agent-noun-suffix

What should I call a person writing/adding comments (by pressing "add comment" link)? Commenter or commentator?

From a deleted answer, I understand that there are commentators (like those unilaterally commentating or closing questions) and commenters (those entering in discussion with others). Is it correct?

Isn't commenting by answering/questioning another commenter/answerer/questioner a live event? And what is the difference in these definitions between a commentator and an answerer?


Commenter, for sure, unless somebody is reporting on a live event. According to the Oxford American English Dictionary:

com·men·tate/ˈkämənˌtāt/

Verb: Report on an event as it occurs, esp. for a news or sports broadcast; provide a commentary.

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