Think it's time for a Blackcoin (BLK) topic since I've seen the coin mentioned a few times
I've been a member of the Blackcoin community since shortly after the coin launch and BLK is actually the coin that made me made me getting more involved into cryptocurrencies beyond Bitcoin. I have a lot of respect for rat4. the community, the core team working on the coin and I've been holding BLK since the beginning.
Blackcoin has a very dedicated community with a very motivated Foundation and members regularly attending crypto conventions and meetings to promote the coin and it's community. Blackcoin was also the first altcoin added to the Genesis Bitcoin ATM and it's also listed on several merchant and payment gateway sites and imho has established itself as being "a real cryptocurrency".
Another reason why I support Blackcoin is BlackHalo / BitHalo.
Same as Blackoin itself, Halo is true crypto innovation. When David released the initial Halo beta client it was pretty much something for absolute crypto geeks and to be honest, most likely half of the geeks didn't even get what Halo actually is and what it meant for crypto.
The tech is sure not perfect and perhaps we could even say it's ahead of it's time, but so is Bitcoin. However, the Halo features reveal the true capabilities of the blockchain technology beyond using it as a public ledger to record the transactions of a coin.
Let me quote the Halo site:
Trust a stranger even if they are dishonest. How?
Thanks to Blackcoin and a special solution to extortion, we have not only created the worlds first decentralized smart contracting software but it will allow two parties to perform any type of contract! The Software allows for decentralized exchanges, derivatives, guarantors, bartering, backing of Bitcoin cash, good faith employment contracts, elimination of malleability and basically any agreement imaginable.
I use BlackHalo myself and I've also seen some screenshots of the new Halo2 client coming up which will combine BTC and BLK in one smart contracting multi-coin wallet and all I can say, it's just sick.
I guess I could go on and on but I'll stop now and leave you all with a few links in case I raised your interest on Blackcoin.