OK, I have not made millions in Bitcoin, but, I have made money! I joined the Bitcoin movement in March 2013 and since then walked away with a few hundred USD. I initially used Mt. Gox as my BTC exchange service, but by June, 2013, I "smelled something bad". I tried to sell and transfer funds to Bank of America and was told it would take 6-8 weeks! I immediatly transfered my BTC to Coinbase!
I think I lost about $200 USD by doing that, but, in the long run, I could have lost more.
SHAME on Mt. Gox! Today they are bankcrupt and facing a multi-million dollar law suit in the USA alone!
The Bitcoin economy took a hit, but it is weathering the storm. Another lesson learned!