What do you think is the proper netiquette for the following situation? I notice someone has an error in a message, should I tell him or her? Why? Explain your answer!

I think i should tell him/her because if i was doing something wrong i would want for someone to tell me and let me know how to do it the right way.Another reason is because if they put something wrong and they send it someone that person can get the wrong idea .So yes i would help them.