I am running a music website (www dot bollymp3 dot co dot in) which is now 2 months old. I have started getting around 1000 visitors a day mostly from Google and yahoo. I get a decent CTR 1-3% which I think is OK but CPM is very low, near to 0.25$, which is not good for me. After getting 40+ clicks I make only 1$ or less. How can I improve it?