Hello my friend. I've just published my new application and i was also asking the same question. How can i increase ranking of my application, how can i get attention by many, what is the key for everything? Well first of all, your application should looks promising. When i say promising, you need to make a first impression. That's means you need to have nice screen shoots of your application, what application is all about and some promotional video. That is the first thing you will need to do. After that i will show you some techniques how you can get more reviews and installations, but i will be honest. For that you will need to pay some money, because advertisement isn't free. We can advertise for free, but that needs to be well thought out. Also those advertisements which are paid are not too much and that will bring you for sure reviews with 5 stars. We will do some promotions that are free. We can talk about that a lot more, but i will leave that for discussion after you assign me.
Regards,
Dusan