According to Brent in the Search Engine Roundtable Forums, Microsoft adCenter is now providing more information into why they are rejecting keywords.

Some of the reasons are:

• Too much ad text (keyword parameter use exceeds character limits)
• Landing page content not relevant
• Website contains forbidden content - Content guidelines
• Incorrect ad format - Style guidelines
• Not enough ad text - The combination of ad title and ad text is less than 6 words

Forum discussion continues at Search Engine Roundtable Forums.

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