make a quality unik content site and make quality one way backlinks and after some time traffic come automaticaly. and if u want urgent then bye traffic is the best solution but that is not for long time.
For long term success, you would have to keep on doing SEO, blogs/forums commentating, directory submission, links exchange and link building in articles submission. Of course all the links/contents built have to be related to your niche. Fast traffic normally are not targeted unless you aim it from PPC ads like adwords.