Does it matter which way the pickets face?
The pickets are usually facing out on any sections that face a street or community area. Sometimes this is required. On sections that face another yard it is usually the option of the owner. There are styles that have the same appearance on both sides. Having the post on your side does require a little more effort to mow and trim around but it does offer more security since if someone wants to step up to look over the fence it will be YOU looking out.