Hi friend, i'm a Search Engine and Crawler professional so i will answer you question, but i will acept also the other's comments if they are based in experience
Even if you content is not good, but if you place it inside a High Ranked Web Site and you have some Headers "H1, H2...etc" with good related KeyWords, you will have visitors all the time.
But if your content is no good, you risk it to be erased from the Web Site's Owner (HP...etc) since they do not want poor content inside their pages, so be careful.
People will return to your pages if your content is good.
Also, there are Web Crawlers that compare your Keywords and Headers with your content, so if there is no conexion, they may be seen as spam, and this it will be bad for you and for your web pages host.
I Hope this help