How many bitcoins would you leave in the following exchanges without thinking "I have to put them offline, they aren't safe here".

This is my list:

BitStamp: max 5 btc
Poloniex: max 3 btc
BTC-e: max 2 btc
TheRockTrading: max 2 btc
Kraken: max 0,5 btc
Mintpal: max 0,5 btc

Add other exchanges if you want.