FACEBOOK PAGES
Well, there are a lot of ways. Guest posting, comments on other blogs, etc..
But the fastest and the easiest way which is neglected by most of the people is FACEBOOK PAGES.. I used to get 50-100 visitors per day before I considered FB pages to promote my post. Then I messaged 20-25 page owner ( with atleast 150K active fans from USA & UK ) to promote my blog posts on their pages and I give them some money in return. 3 of them replied back, and I selected the one with the highest number of fans from USA (He has almost 200K active fans from USA).. I give him $1 for every article he shares on his page and this method get me almost 1000-1200 visitors instantly. I give hm $5 per day and he gets me 5000-6000 visitors per day (somethime even more)..
Tips
1. Do not look for a page with more fans, look for the highest number of "people talking about"
2. Look for a Indian/Pakistani/Bangladeshi page owner. Anybody from USA or UK wont share your content at such a low price.
Good LUCK