message board
From Longman Dictionary of Contemporary Englishmessage boardˈmessage board noun [countable] a place on a website where you can read or leave messages SYN electronic bulletin boardFrom Longman Business Dictionarymessage boardˈmessage ˌboard noun [countable] a place on a website where you can read or leave messagesSYNelectronic bulletin boardThe site has run into trouble for not monitoring its message boards closely enough.