I store mine on freebitco.in. It's easier and accessible anywhere.
For me i will stored my bitcoin in cold storage(electrum) half of my collected bitcoin every week. and half of my collected bitcoin is in my online wallet which is coinbase.. Coinbase is easy to use and there's no fee for every transaction but its just my temporary wallet because there's a chance that the site will close or down..
As i read in the replies, many people are using coinbase, but I think even if the site is reputable you must always consider a hardware wallet (electrum is not really a cold storage right?). You must not wait for the site to go down and lose all you funds. Tight now, you must be carefull in your your funds before losing it all. Its a big mistake to wait for the site to go down. Always expect the unexpected specially online.
You have to take security precautions Hold your coins in some wallets is the best solution but you save a small amount in breadwallet just to show people and send a small amount.
A good measurement of risk. Wallets that have a very large number of coins are prone to hackers and pshing, so the best way is to keep the address of the one that have the large amount. Being low key is safer than showing the people that you are confident in your way of storing the coins.