[jameswyse]

We can all agree it's better than using the same password on every site, but the people who do this are very unlikely to adopt such a system.

Try explaining this to a small child or elderly person, it's just not going to work.

The technology to do away with passwords all together already exists, we just need the right people (lets face it, it's probably going to be google) to standardise and implement it. It's no easy job but in my opinion is necessary for the web to move forward.