hi im a newbie here and I've heard that big alt coins like ethereal dash are "pump and dump" what does this mean? are they gonna crash soon? should i invest into them? or is it too late? what do you guys think of other alts like monero or ether classic... should we invest into the cheap alt coins?
PUMP: Usually done with the intention to raise the price of a coin. They buy a coin with a large amount, then automatically the price will increase, if the price has gone up by desired, then they will sell all the coin they have.
DUMP: You could say the opposite of PUMP. With the same purpose benefit of course, they will sell the majority of coin coin to lower the price, if it matches the price they want then they will buy a coin on a large scale at a relatively cheaper.