text: what is the difference between writing user's and users'. please let me know? i have seen both the forms and really doesnt know clearly what they mean. can someone help me out? when you use 's it is showing posession.. as in the user's pen was the one that made the mark.   users' is plural possessive, meaning that it belong to a group of users. as in the paper written was a colaboraton of the users' ideas and thoughts.  the english language is very difficult in some of it's possessions and plurals.. good luck and hope this helps