I've been using Bittrex to store most of my coins but I don't really keep my STEEM there because it seems like 2 days out of the week at least the wallets are down due to "maintenance".
I haven't withdrawn anything I've earned here but I do make deposits to my steemit wallet through block trades. I usually send some BTC or ETH to my bittrex wallet and then use the block trades exchange / deposit function to send the currency to my steemit wallet. That way I don't have to worry about my STEEM getting stuck on bittrex during wallet down times.
I was curious what might have caused that little bounce in STEEM this week. Seems like the same thing happened a week or so ago due to wallets being down on most of the exchanges.
And speaking of open ledger, im planning to create an account there this week. I've seen a few other people who really know what they're doing in the crypto game mention it and it sounds like a good idea to have an account with open ledger.