To add a story to your communtiy, 你 go to the very bottom of the page. Right under the field for your review, 你 find a drop-down menu with "Report Abuse" and "Add Story To Community". If you're the founder/manager of the community 你 want to add, it should be a piece of cake. If not, best way to get a story added is to contact the manager of the community with a PM, containing the story link.