"Crossing the Chasm" is a popular book in Silicon valley, and basically refers to making the leap from early adopters to a mainstream audience - it's clear that

"Crossing the Chasm" is a popular book in Silicon valley, and basically refers to making the leap from early adopters to a mainstream audience - it's clear that facebook is there, and benefiting a lot from it. And twitter isn't there quite yet. They are stuck in the chasm, which I referred to as "jumping the shark," suddenly verging on not being cool, but with no real mainstream audience awaiting them.