As with any other site. Worry most about providing useful content or service to people visiting the site. And the "unique visits" will follow.
If you just spent your time scheming plans to cheat the search engines than your site will surely fail. Even if you do get to the top of the lists it is pointless if the content is of no use to the person who came to your site.
Search engine promotion is great but it's only a small part of the game.