Which is the most effective way to get targeted traffic via referral?

[tabassum21]

Referral traffic from social media and other what not's are free.

 Others are also free if you look. If someone gives targeted commentary or suggestions offline then also it is possible to draw good traffic.

Anyway, the best way should be forum marketing. Because social media are good for short burst of traffic. For long term things and also brand awareness & reliability you need something more robust.