They differ from chat rooms in that messages are often longer than one line of text , and are at least temporarily archived .
An Internet forum , or message board , is an online discussion site where people can hold conversations in the form of posted messages .
people differ from chat rooms in that messages are often longer than one line of text , and are at least temporarily archived .
An Internet forum , or message board , is an online discussion site where people can hold conversations in the form of posted messages .