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It depends on what kind of node. Seed, wallet and witness configurations are generally working well.
The full rpc nodes however are expensive and somewhat troublesome to run.

So RPC node is just all these three combined. That doesn't sound too bad. But isn't running even one of the three getting increasingly harder as blockchain bloats? I hope Steemit Inc distributes funds towards this "issue of the tomorrow".

They're simply expensive; Full RPC nodes also work well, otherwise this site wouldn't be functioning.

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