Sure you can submit your links to link dump boxes like
http://freeporn.xiando.org/ , but the number of visitors you get will be in the thousands. I and other webmasters are still willing to pay for huge traffic regardless of how many sites like that exist.
And the fact that new sites like that appear every day, it will not affect the number of surfers at those high-traffic established sites. The number of surfers (new people getting Internet access) is still growing at the same rate new sites appear...