copyedits and refactoring talk page posts   Hi  Apologies but I have to make you aware that fixing other peoples post on talk pages can be frowned upon WPREFACTOR While I appreciate that the ones I saw were changing from incorrect to correct grammar and spelling the editor whos posts were changed may not appreciate it Other minor fixes correcting other users spelling or grammar is discouraged but fixing obvious typos is generally acceptable  The second point is that changing to the serialOxford comma seems a little strange  can you tell me why you did that in some articles