Its hard to answer this question without knowing what job you are actually applying for. If the job is related to these skills, or you feel that the company may use them then add them in your skills section. If the job is completely unrelated then briefly mention them in your hobbies & interests section.
I review thousands of CVs every week, and the most common mistakes that candidates make is to harp on about skills that are totally unrelated to the job in the skills section of a cv/resume. Use your common sense. For example a candidate applying for a jewellery store managers position should not list the ability to fix motorbikes in their skills section, this should be put into the hobbies/interests section (it does happen believe me).
As Tootle says, just because a company do not advertise that the candidate needs to have Word press etc, does not mean they don't use it. They may like to use it or already use it.
Its not necessarily what you put on your CV its where you put it. Ask yourself this; will it add value directly to the employers business type? Yes, then put it in professional skills section. No; then add it to hobbies/interests.
I have had a few candidates that were asked for interview, not for the job they applied for, but because the employer felt that they could actually use them in another area of their business.