Advo Names Harding CEO  NEW YORK (Reuters) - Advo Inc. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=AD.N target=/stocks/quickinfo/fullquote"&gt;AD.N&lt;/A&gt;, which publishes  shopping ad circulars and provides other direct-mail marketing  services, on Monday said its board of directors had elected  Scott Harding chief executive, effective Oct. 15.