Gannett Needs Ad Pickup to Hit Target-CFO  NEW YORK (Reuters) - Newspaper publisher Gannett Co Inc.  &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=GCI.N target=/stocks/quickinfo/fullquote"&gt;GCI.N&lt;/A&gt; will need to see advertising demand pick up for its  fourth-quarter earnings to meet the consensus target of Wall  Street analysts, its chief financial officer said on Wednesday.