"…we are seeing many companies looking at their cash balances and burn rates and deciding to cut burn to increase runway. We've done an exercise with our own portfolio that I wanted to share with all of you. I am calling it the survival matrix."

"When the service first appeared a couple of years ago, its appeal seemed largely limited to narcissists who wanted to let everybody know what they were doing in real time. But, like blogs and social-networking sites, Twitter is starting to cross into the mainstream, as a wide range of people find interesting uses for the brief notes."

"To preserve cash, many tech start-ups are rushing to lay off employees and cut expenses. They are shelving their dreams of Google-size riches and getting small, humble and thrifty, all with the more modest goal of surviving the coming economic winter."