Bit Tech just published a feature titled "Misinterpreting the enthusiast", which discusses how the PC enthusiast is at risk of being extinct..
"The bottom line is all about how the enthusiast is defined. To hardware companies, they'd like to think we are one of two distinct types: the people that have so much disposable income they will always get the latest, bleeding edge parts regardless of cost, and take the accumulated benefit of all it to a slightly better system than anyone else. Well, for three to six months.
Every company that makes an ‘enthusiast’ product only really wants to know this type of people because it’s how they make their margins. Think of 3-way SLI, the 8800 Ultra, CrossFireX, Intel Extreme Edition processors and just about any ‘gamer’ motherboard you can think of."