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1.
a person whose job is making posts at online forums.

some professional posters are paid by the forum owner to bring traffic to the website. others simply post for attention.

professional posters usually works for low wages, have drinking or drug problem, frequent craigslist for male and/or female companions.

a professional poster is also a power poster.
"posting is all I have, I am a professional poster."
by picoman April 01, 2009