I have spent the last 30 minutes studying this graph. I find it amazing. The most intersting items I have pulled from it are that it is entertainment items that have the fastest adoption rates and not quality of life products. It looks to me like the products that have the steepes curves are VCR, colour TV and radios.
I have also noticed that there appears to be some loose correlation between related products, which would be expected. Computer and internet curves both seem to increase after a 20% adoption, for these products it took 20% of households to convince the other 40% that these products are worth your dollar.
Found on Adverlab via NY times
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