Wow, this is a sleeping bomb if I ever saw one. Someone deserves to get strung up about this.
Basically what this article means in plain english is that in 2007 when Windows Vista is released that every video card you have bought before today and almost every monitor you have bought before today (well there are 10 available in todays market) will only be able to display 1/4 of it's display capability.
If you want to watch movies at 1980x1080, your system will need to support HDCP. If you don’t have HDCP support, you’ll only get a quarter of the resolution. A 75% loss in pixel density is a pretty big deal – Wouldn’t you be angry if your car was advertised as doing 16 mpg, and you only got 4 mpg? Or if you bought a 2 GHz CPU and found out that it only ran at 500 MHz?
Some of these video cards cost $500 and basically they are now worthless as none of them are HDCP compliant even though they were advertised as such (and some have been for the last 2 years).
This insanity out of Hollywood has to stop - copyright protection has gone too far when it prevents us from using equipment we already rightly paid for.
P.S. UPDATE: Another article is located here it's a less technical explanation, whilst it's nice to hear that Microsoft are stating that only BlueRay and HD-DVD content will be considered DRM restricted at the moment but thats not to stop anyone else licensing this DRM (or even Microsoft itself saying all Vista content is DRM restricted forcing a wholesale update to hobbled monitor equipment).
P.P.S. UPDATE: ATI are now being sued for HDCP complain claims (and rightly so)
I hope they aren't the first hardware vendor to be sued for doing so.