Using proper netiquette .

If i see that someone has in error in thier message then yes i do think that i should let him or her no . My reason for why i say this is because if someone has an incorrection you should let them know. Because if it happend to you one day and no one told you and it was a class project and words counted then im sure you would want someone to let you know . So its a good thing you tell that person thet he or she has mad in error in their message .