The challenge has nothing to do with fences, Annie — that was just the theme I used. You don’t have to have a theme. You can just take photos in your neighborhood or write a story about it if you don’t want to do a photography submission. Leaving the door open, just asking for whatever is submitted to have something to do with your general neighborhood, and that is open to your interpretation too.
Louise is referring to limitations to how many pieces you can view if you are not paying the monthly membership. I am part of the Medium Partnership so my pieces are “locked” — which means only paying members can see everything I post. Someone who is not a paying member can only read 3 locked pieces each month.