Everyone would go crazy with the ability to check a news feed 24/7. I suppose we'd have to find a way to adapt to it as there are some pretty awesome advantages.
I keep hoping that the next real revolution will be a way we can decrease the amount of data we get. I can't conceive of how this would work even on a theoretical level, but I hope someone figures it out.
I've been thinking about this a lot myself. I think that software is eventually going to have to help us stay disciplined in concentrating on one thing at a time.
Of course people are creeped out by the idea of software that tells us what to do, or not to do, but I for one would like my phone to remind me that this is not the time to look at hacker news, and besides, there's nothing critical on it for me to look at it that can't wait until later.
Don't phones do this now? To me the killer feature isn't 'always available' but that it's 'always passive'. Passively recording, passively overlaying information you might want, passively inserting ads...