/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: yutakahamaoka9 https://cdn.slidesharecdn.com/profile-photo-yutakahamaoka9-48x48.jpg?cb=1691848302 One of my research topics is WOM marketing. It is why I registered to FB. I live about half century and am not sure how to use FB.