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I don't know of another blockchain that is faster and cheaper than Steem.

I would also add "has more on it that is being used".

While there is a lot being build on Ethereum, not a lot of activity for the development.

Fee-less transactions are going to really catch some people's attention when they realize the viability of their application is negated to a great degree because users will not want to pay each time they want to do something.

Imagine if each upvote cost people some STEEM from their wallet.