Google-like technologies could revolutionize TV, other media The same joke has been around the ad industry for decades: "Half the money I spend on advertising is wasted. The problem is, I don't know which half." ¶ But that line, as old as Madison Avenue itself, may be headed toward obsolescence, as the dawning era of digital advertising helps identify those two halves. ¶ After years of failed promises for ads that can pinpoint targeted consumers, traditional media are finally taking interactive advertising seriously, on the Web and beyond. Companies that have advertised for years on platforms ranging from television to billboards are rethinking their marketing strategies, as Internet advertisers work through the technology glitches and privacy issues that have challenged the first wave of the technology. [c|net news.com]