The bursting of the tech bubble and the minor recession of 2001 knocked about a point off the peakrate of 67.3% in April 2000, but even after the Great Recession ended in June 2009 the rate was 65.7%.
These are the sort of things you would expect, Wi-fi-connected appliances like refrigerators, ovens and washers that can download recipes or take advantage of off-peak electricity rate times.
They must note, though, that the market is still more than 30% off its peak, and the rate of distressed properties, while substantially lower than in 2009, is still far above the historical average.