Yes! Once you've finished your search engine optimization work on your website, you don't need to worry about advertising a lot because if your website has good content, the visitors would come to you, instead of you coming to them, lol.Search Engines since they are searching for my topic, so they are more likely to join or at least read my content instead of a random clicker from a website.
Well, if there are a lot of back links pointing to that website, then your website can benefit.I heard doing link exchanges to sites in your category also helps out a lot if the site your doing an exchange has a lot of visitors.
Where do you prefer your website traffic from?
Search engines, referral websites or direct traffic?