Charter, Cox, Time Warner Cable, Cablevision, Comcast and Bright House Networks are collaboratively working on a new advertising system they've dubbed "Canoe." The effort will attempt to make TV advertising more interactive and user (or neighborhood) specific, based on range of factors. The Wall Street Journal reports that efforts to work out the kinks between the different companies cable systems has "proved harder than anticipated." Early implementations of this system would only target neighborhood demographics, but later incarnations could use data provided by your set top box to deliver ads specifically tailored to your viewing. That will of course spur renewed privacy debates -- like those surrounding behavioral advertising.