I agree with deisik, I have Grammarly premium and take it to post quality content with error-free grammar.
Wow! that's really a wise decision there >.< and good luck with them because they are going to get ban from this forum but really why do they even copy a post and post it? i mean they have no brain? sorry for being rude but they are just eager to post and they search and search for a new topic and they don't even see one so they copy it i have a friend that he posted a long and understandable reply to a topic so someone copied and edited it -_- so that he won't get caught but really when my friend read it i mean his replied on my friends reply same topic as him but edited i really laugh and think that how stupid he is to copy a sentence then replies it to the one he copied i mean that's no brainer >.< sorry for being rude i just want to express this and this is the right topic for it >.<
Sorry but your friend should've reported the message to a moderator. It's not the mod's job to search through every post for plagiarism and delete them. I recommend theymos to develop a script to detect potentially similar posts under a certain topic unless they fall under giveaway or service section.