One lesson here is that an exchange shouldn't be used as a wallet, i.e. Don't keep funds there for a significant length of time. Put your usd/btc in there, make your trades, then take the btc/usd out asap.
http://www.mongodb.org/about/production-deployments/
There some heavy-weight companies on that list using MongoDB. eBay, SAP, stripe.
EDIT: in addition, hopefully people will learn from this, and not use exchanges as wallets, and not (try to) make trades on an exchange without doing their research first.
It will be just another page in history, yes, but it's a painful one. Personally I still believe Gox will ultimately be okay since everything still has a logical explanation, but hypothetically it seems hard to believe that Gox self-destructing would be anything but bad news.
I believe in bitcoin and its long term potential, but there is no question that lack of regulated exchanges will stunt its long term acceptance.
That just isn't true. Bernie Madoff got away with his outright ponzi scheme for nearly 10 years before being caught. Individuals expressed concern to the SEC about Madoff's investment fund as early as 1999. The SEC didn't do anything until 2009.
The scam was told to be $65B, but the actual losses were ~$17B and they have recovered more than half that (over $9B). Additionally the IRS let the losses be written off, so you and I ended up picking up another half of that tab.
tl;dr it was an awfully large scam, but not nearly as large as most think. Less than half the value of an instant message client actually and only a few Instagrams.
Good regulation implies preventing fraud through rigorous rules and monitoring before it happens or if it does before it gets out of hand to the point of needing to resort to the courts.
After all, MtGox is not Bitcoin.
Bitcoin is a decentralized system that relies on many centralized services, but it also enables decentralized versions of many of those services to be built. As each centralized service gets picked off for one reason or another (Silk Road, Mt Gox) people will realize why the decentralized and trustless versions are necessary and migrate to those.
This is exactly what happened with file sharing (Napster, Gnutella, BitTorrent, etc), and we're starting to see it happening with money (Bitcoin), messaging (Bitmessage), DNS/naming (Namecoin), coin mixers (CoinJoin), exchanges (Ripple), etc.
It's no shock that Gox would die due to technical problems like this; they're not run by a technologically competent staff (compared to, say, Coinbase, a YC startup).