Simply put: their airdrop is right now the best i've ever seen.
They are giving away coins in an intelligent manner, incentivating users to actively join their forum. This brings up a lovely and alive community and this is one of the most important aspect of a new coin, in my humble opinion.
The second reason is the coin itself: it has a great technology behind it; there is no way of denying it.
It is based on the TOR network. That is the deepweb, for the ones who do not know. What that means is that unlike any other cryptocurrency out there, every transaction made in deeponion is really untraceable . no one can see your IP, the IP of the wallet , the IP of the receiving wallet or the transaction . Soon a deepsend feature and a new wallet will be live, and every transaction will become totally untraceable. I don't have to hide anything, i'm not a criminal nor a tax evader, but i like my share of privacy, don't you ?
They also have the deepvault software up and running, wich is basically an instrument to verify files authenticity and origin. It is useful to many developers and in future could be a useful tool for everyone (documents and such).
Well, right now i just can't wait for the coin to be ready and fully released, which will happen in the next few months!
-pseudopseudo