<![CDATA[Articles by Philipp Pieper]]> http://adage.com/rss-author.php?id=4867 en-us 120 <![CDATA['Viewable' Ads Are Worthless If Your Website Is a Cluttered Mess]]> http://adage.com/article/digitalnext/viewability-noticeability-counts/238334/ Mon, 19 Nov 2012 09:53 EST Philipp Pieper <![CDATA[The Trouble With 'Viewability' as a Metric for Digital Ads]]> http://adage.com/article/digitalnext/trouble-viewability-a-metric-digital-ads/237815/ Thu, 18 Oct 2012 10:20 EDT Philipp Pieper