To increase inorganic traffic on website you can Do blog commenting, Forum Posting and SMO.
TO get other traffic, use fb, twitter, linkedin, stumbleupon, mob and website which provides vote.
Social media is a best to get inorganic traffic on website
For increase traafic Do article Posting, Press release, forum, blog post and SMO for your website
I suggest you Articles,Blog and forums.
Try Social media submission for this. That will help you.
I think so quality work as well as social media.
Nice information you shared.