If you are reffering to all the posts regarding Cat6, it was general information for people to consider if they wanted to upgrade or get all new cabling and that Cat6 was not a big investment into there systems. Average households probably would not use this or even be aware of this or the differences between Cat 5 and 6. Yes, there is an advantage of having Cat6 to a point, however average house holds and everyday users will not notice this. Computer Geeks and IT people do and I for one enjoy the features of Cat6. The only way to enjoy the Cat 6 advantage is to fully have a Gb network in your home. Means all devices that don't have Gb NICs are upgraded, Gb switches are put in place and Cat 6 is installed. YA, not all devices support Gb speeds, i.e. Xbox and some (PS?).
Current gaming HW such as the 360s don't support Gb connection speeds, only 100Mb. How ever we can only presume that in the future, gaming consoles might support Gb speeds at some point. For now, it's up to you the user to make the call if Gb and or Cat 6 is for you. However it doesn't hurt to have lots of over head for the traffic to flow thru and be up to date on your network. Your home networking experience can only be as good as how your system is set up and maintained. It' doesn't take much to have a good network system for the home and enjoy it fully. Regardless of the cabling system that is used.
I for one have enjoyed Gb speeds on my home network. I initially started with Cat 5. Now I'm on Cat 6 for less than $50.
http://en.wikipedia.org/wiki/Category_6_cable