<![CDATA[pay-per-call advertising Resources | ZDNet]]> en-us <![CDATA[Tuvox's Speech Application Paid for Itself in the First Month and Handles Greater Call Volumes]]> Mon, 30 Apr 2007 00:00:00 -0700 <![CDATA[Pay-per-call Internet ads to generate $1.4 bln in 2009]]> Thu, 23 Jun 2005 14:10:01 -0700