I'm really loving RaiBlocks too. My main concerns now is that there's no financial incentive to run a node, and the current price seems fictional (because 99.98% of the supply is locked up in wallets). I have high hopes for it, though, I read the whitepaper and nothing stood out as a huge problem, which is good.

The worst whitepaper I've read recently was for something called Verge, which was basically "we're gonna run a bitcoin wallet over Tor for anonymity you guys!"

Voted you up. I think if people looked into how Cardano does what they do, they'd realize it "cures" all of the ills of Bitcoin, Ethereum and every other unscalable PoW currency in an elegant, provably correct way. I personally think the future of cryptocurrency is going to look far more like Cardano than Bitcoin. Not saying any of the top contenders are going away, they just will be glued/superseded by something like Cardano for more or less anything these others aspired to become, e.g. microtransactions, better/nearly infinite scalability, etc.

PoW is not ecologically friendly, and that will be one of its growth inhibitors.

Isn't it closed source and run by a single corporation? What's the benefit of being tied to a block chain if for a centralized currency? Just copy the current visa/banking system and you're good to go.

So far IOTA is centralized, it relies on snapshots. It is just my intuition - but it does not look like "the tangle" could ever be decentralized - there is just no mechanism that would protect the network from bad actors.

Given that it currently depends on a centralized coordinator, that seems unlikely.

Have you actually tried to use IOTA? It's really bad, you get different balances depending on which node you connect to, sending is weird, odd things like that.