I have 40k likes on Facebook..all from India. How do I make money?

As a compliment to my future website, I made a simple facebook app in hopes it would go viral and help brand my company. I was right. Not only did the app go viral but at the highest, I was getting 12k hits a day and for 6 months have had a steady traffic stream. As a result, I have been getting like after like and now have 40k likes. Currently I get around 100 likes per day.

Sounds great right? Well here is the problem. 85% of the traffic is from India and Nigeria. How do I use these 40k fans to make more money? Currently we have ads all over our app and although very annoying, we make a nice 10$ per 1k hits. There has to be more ways to make money with all these users and all these likes. What can I do?