9. The method of claim 8 , further comprising: identifying a spike in the quantity of topics; and classifying the document as spam upon identifying the spike in the quantity of topics.
9. The method of claim 8 , further comprising: identifying a spike in the quantity of topics; and classifying the document as spam upon identifying the spike in the quantity of topics. 10. The method of claim 9 , where the score is further based on classifying the document as spam.