JavaScript will be superseded by, what else, C/C++. Right now there are no JavaScript killer applications on the web. Adobe and Microsoft tried with their respective wares, but Apple interceded and stopped both.
It's hard to imagine now, but something will come along that, like web services, finds a slick way to give the folks what they want, performance.
The number one thing I don't like about my macbook is the keyboard. As a developer I have to learn, and re-learn, twice the amount of keyboard combinations to write code.
It really sounds like Groupon is no magic bullet. You still have to run your business. Everything you did in response to the Groupon experience (higher traffic looking for a loss leading offer) is what any solid business would (should) do in response to a loss leading promotion.
It's hard to imagine now, but something will come along that, like web services, finds a slick way to give the folks what they want, performance.
And that innovation will be written in C.