I agree, there are lots of history where people who left their coins in exchange lost everything. GOX and Cryptsy are the bigger one, and there are some small exchanges too like sharex that just close and run with their client's Coin not saying the one posting this message have First hand experience of losing coins to an exchange/trading platform that shutdown.
Which means that your saying we need to be very careful if we are going to left our coins in different exchange, once our coins being sold at once we must put it in our safety storage wallet.
The best thing to do is to withdraw your profits on regular basis and only keep initial investment on exchange sites, and profits should be transferred to cold storage to minimize risks.
Absolutely.This is the best way to do it.
Make your trades, and withdraw your profits immediately.
Only leave your trading amount on the exchange.But make sure this amount isn't hurt you if the exchange gets hacked or closed.
Many people are greedy as hell and therefore risk way too much money.And when shit happens the crying is huge and anybody else will get blamed.
That is a very good advice. By doing that, you will not lose a lot of money. But what happen if you do not make profit in the trading?