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"Some Yahoo! Publishers in the YPN program are receiving warning emails from Yahoo! that they can not run other contextual ad programs with YPN.  The only thing is, these publishers are running AdBright in conjunction with YPN.  And we all know AdBright is not contextually driven. One member said; \nI called Yahoo and they said that AdBrite wasn't specifically forbidden or specifically allowed. They said either it's a mistake by the review staff (which seems unlikely) or else it's another ad program that caused the problem.Forum discussion at WebmasterWorld."^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/archives/002857.html>