I once hold a coin and suddenly the coin that is almost $1 dump to less than $0.01 to me I move on but to some people which are newbies this can discourage them from participating in crytocurrency and make them conclude it is fraud and that brought me to a question how do you think pump and dump group are damaging crypto-currency and it's reputation??
well
if that coin is useless coin , just like a easy way to get money.
but if that a good , like a top 100 coinmarket.
i think they need a big money to make a pump dump scheme.
about newbie , i believe more exchanges sites already announced about crypto currency is very fluctuactive
considering exchanges sites its a initial steps to get started