Shelf life of most content is now equivalent to shelf life of a white breadInternet is full of billions and trillions of pages with content and most of the content is redundant but still we see everyday millions of pages of content is created and submitted to search engines, major being Google.
A content which is not useful and of relevance gets lost in billions of pages and no one remembers them except the creator. Google itself is doing a daunting task of presenting us with most relevant and updated content. Google follows the policy of giving importance to content that adds value to the reader is highly commendable and all the content creator must follow it before generating any content.
Content creator may be able to get high ranking through Black Hat SEO and other tricks but in the end their content gets stale like a white bread in a few day.