Just wonder what is your opinion whether an online shop should have a contents site to promote them other than user articles site? Any idea? Please help. Thanks
you'll need content some place if you are looking for search engine traffic. You might want to consider writing for someone else that already has traffic.
Rather you can have a content section on the same site. I think that would benefit you in every way. Also, writing articles for a site that already has some traffic might be a great option too.