Re: Bridgewalker now in public beta: wallet with a twist - transact in BTC, hold USD
FAN-TAS-TIC 
Yet another portion of my prediction from the Solution to the Bitcoin Foundation post coming true.
And as for this:
You're not only protected from market swings, but as I also said in my post from 51% attacks:
In other words, I see a future where people do not use bitcoins (or other cryptocurrencies) as their main store of value. They are too volatile and unpredictable; even further down the line there are many unknowns. Instead people will use crypto-coins for what they are best at which is transferring value. They will probably use gold/pm's for what they are best at, which is storing value. Many people will hold bitcoins, and other cryptocurrencies only long enough to get what they need. There will always be investors and speculators, of course, but primarily no cryptocurrency will be used in the way people now use cash, where they keep 99% of their wealth permanently stored there.
Yet another portion of my prediction from the Solution to the Bitcoin Foundation post coming true.
... So far, pretty standard. The difference is, that you will never hold bitcoins for more than a few seconds, as Bridgewalker will automatically exchange them for US dollar as soon as you receive them (and they confirm) and will only buy bitcoins just that moment when you are about to send them. ...
If over 95% of your wealth is usually in gold, for example, are you ever really concerned about a 51% attack, or the possibility of new and better cryptocurrencies? Not really. You only hold a given cryptocurrency for short periods of time, probably based on exchanged rates, and perhaps even managed by a professional.
And as for this:
You can therefore use Bitcoin solely as a payment network, while being protected from market swings.
You're not only protected from market swings, but as I also said in my post from 51% attacks:
As I pondered the implications of all this I realized this also solves the 51% attack.
In other words, I see a future where people do not use bitcoins (or other cryptocurrencies) as their main store of value. They are too volatile and unpredictable; even further down the line there are many unknowns. Instead people will use crypto-coins for what they are best at which is transferring value. They will probably use gold/pm's for what they are best at, which is storing value. Many people will hold bitcoins, and other cryptocurrencies only long enough to get what they need. There will always be investors and speculators, of course, but primarily no cryptocurrency will be used in the way people now use cash, where they keep 99% of their wealth permanently stored there.