In pretty much all cases, the companies in question had peaked were experiencing declining growth and attempting to do a hail-Mary... and failed miserably. Com

In pretty much all cases, the companies in question had peaked were experiencing declining growth and attempting to do a hail-Mary... and failed miserably. Compare Digg and slash. One completely died, the other has stuck with its formula and hasn't disappeared, but has just faded into irrelevance.