I haven't heard or read anything about the PS3 overheating. That's news to me.

Houshold mean everybody in the house.  A man making $40,00 per year, his wife or girlfriend earning $40,000 per year, and a game playing teen working fast food making $12,000 per year would equal $92,000 per year in household income.  $75K is not far fetched at all.  Besides, you would barely be able to afford a one bedroom apartment on 75K per year in some places such as New York City, where wages are mcuh higher than country areas.

Just as a side note in case it hasn't been mentioned yet ... Nielson measures total use of a system and not just use for gaming, so the other media functions of the HD consoles increases average usage.

With that said, the Wii's failure rate has far more to do with the system being low power (in terms of energy consumption) and having less moving parts than it has to do with usage. If you have a high energy consumption electronic device that has multiple fans, eventually the fans will clog with dust/hair or (simply) fail with age and the system will over-heat and die. Even if that doesn't happen, eventually a hard-drive or optical drive will fail.

Yeah speaking of which, I'm just going to go ahead and lock this thread, I think Taz learned his lesson, a few good things did get discussed but in the end everyone knows the answer to this is because of the actual hardware and not how the console is played.  I would give a warning for trolling but I'll chalk this one up to ignorance and hope it doesn't happen again.

According to the US Census 2006 Economic Survey, only 26.75% of households make 75K or more.

Median household income is 50K.

The fact that this is only video game playing people could skew the numbers toward the more affluent part of the population, but a 25K difference seems too large to me.