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Yeah, that's definitely a concern. Hopefully we have smart contracts type systems to weed out legit ICOs from the scams.

The main concern is that the fonder obtain large amount of the new altcoin, which may cause a large devaluation of the altcoin when they sell the altcoin. The effect is so significant when the volume of the altcoin is low...

Founder need not own any altcoin. In the example I mentioned above, Braid, 100% of tokens are distributed to investors.

So The ICO project also has another concern that whether the token is bening accepted. They choose to bonds with famous altcoin like Eth, which can massively changing the environment of current altcoin market.

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