Blockchain bloat, which is only twice as big as Bitcoin's, I've grown tired of simply reposting what has already been said, 1,000,000 times.
I wouldn't use word "only" when something is twice as big while having 1/100th of transactions. Even if you reduce it by 50-70% it will not scale for mainstream. Bitcoin based coins won't either in their current state, but there is a known solution for Bitcoin based coins - mini-blockchain.
It only costs around 500k to buy up all Darkcoin's Masternodes
Again, your math (amongst other things) is off.
What do you have to say now??
You have said multiple times that I am a liar. I asked you to show me where exactly I have lied. No response. If you claim someone is a liar (multiple times) then you should back it up.