Interesting Article About Email

This is an interesting article about email:

The time has come to ditch email

I'm not sure this is practical, but it would be interesting for some big player, with a lot of users, come up with an open standard that is at first available to only the users of their system (gmail, perhaps?), but would catch on like wildfire once people realized it was secure. Of course, is anything secure? A computer in the top 500 might be required now to send out a bunch of emails, but what about in 5 years? And you wouldn't have to have a powerful computer if you used a web email client -- in fact, it would probably be a huge overhead for large email providers like yahoo and gmail. And then there's the fact that nothing will be secure when quantum computers are widespread, so will we have to start from scratch again?