Liquidity is a factor to consider when choosing which exchange to trade your altcoins. You don't want to face a situation where you can't sell your coins at a good price. Poloniex and bittrex are the best place to trade as both have good volume. The rest of the exchanges are not really worth it unless you are trading with a small amount of BTC.
Exactly that.
people are always amused with those 1000% pump in yobit but they are always fake.
0 volume pump made by bots trading with itself.
you buy the coin, you think you're rich but you cant sell the coins because of the zero liquidity.