Steve Jobs is the face of Apple, and its greatest driving force. The company almost died in the 1990s, and it took Jobs to bring Apple back from the brink. And once Jobs leaves the company, it could very well lose its direction. While Apple has plenty of other executives that have been able to step in while Jobs has been on medical leave, losing Jobs would leave a gaping hole in the company that would be difficult to fill.

One of these companies will buy the other and might reach 100 years. The PC market is changing, and it isn't clear if Dell or HP are up to changing times. HP bought Palm for its WebOS, suggesting that this company could have some ideas about the future of smartphones and tablet, and Dell has dabbled in other markets, but these companies are heavily reliant on traditional PC hardware. These companies need some innovation to stay relevant. Is either up to the challenge?

Last year big dollars from Google. Big mistake. Priceline survived the last bubble burst, but even with its William Shatner ads the truth is that there is a lot of competition for finding cheap hotels and airfare. These companies will likely join eToys, Pets.com and GeoCities.