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Why does my page display the HTML text instead of the advertising material?
From Wiki.zanox.com
You need to add the affiliate code to the source code of your page. If you have used an HMTL editor to edit your page, you may have entered the affiliate code in a display text field. As a result, the editor would have treated the code as text to be displayed on the page. To fix this, open the page in HTML view and insert the affiliate code directly in the HTML source code.