Why do you think development is not activ?
MoonMoon posts everytime he has something to update.
He announced that he is working on few thing like the exchange and stuff.
Big developments take more time than 1-3 days, so we will hear from him when development makes mentionable progress.
Vote on Mintpal:
https://www.mintpal.com/voting#PRTBuy on Poloniex or Bter