When search was a baby, you could rank high by just adding white words. Those are words with a tiny white font, so the readers wouldn't see them, but the search engine would. Then the search engines figured it out, next…
Roll a few years later. Why bother creating content? Somebody else can do it for you. That's the area of user generated content with blogs and comments. The problem with the blogs and the comments is that the vast majority of the blogs are just “junk”.
All the announcements are all the same.