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It will be both, but a balance needs to be maintained somewhere.

A blogging platform is an interesting real-world application of the blockchain platform.

A bank for speculator's to increase their holdings is essentially what every other coin out there is about. This is the part the draws all the comparisons with ponzi schemes.

I'd also argue people selling their SP so people can self-vote is damaging to the platform. There is supposed to be a curation-class that encourages and maintains quality on the platform. That part of the steemit-social contract is breaking down with delegation pooling, vote-selling and payouts.

Well the curstion class only seems interested in voting on blogs with large dollar signs so this argument is moot.

Well, however we will discuss it, the whole steem ecosystem is livng on its own and we have no influence over where it goes.

Its also impossible to design and code a system, where people would behave 100% rationally and not selfish. If delegations wouldnt be possible, people would find another way to get the best possible outcome for themselves. Its just how we're designed.

Selfishness is perfectly fine. Its an amazing motivator when its put to work to help the entire system as a whole. Selfishness can drive good behavior like this:

However, the carrots and sticks need to be made in such a way that they don't open themselves up for abuse like this:

I'd argue the later really highlights delegation and bidbots.