Airdrop is a pretty dumb idea, you can already mine and stake this coin to generate new ones, and the pre-mine of 10% served to fund development.

Also, is there any website that allows me to see the AVERAGE mining difficulty to predict amount of coins mined? The client and block-chains fluctuate every minute or so from 0.0003 to around 800, so it's hard to see the average difficulty.

I've been really interested in Denarius recently, with the recent drop in price i've bought around $200 worth, just to stake and hope the price goes up. But stealth addresses with encrypted messaging and 10 second block times is really something, and I can see it being one of the major players in the future, unless the dev gives up, which I don't think he will.