16. The computer program product of claim 13 , wherein the first domain name category includes domain names corresponding to non-adult websites, and the second domain name category includes domain names corresponding to adult websites.
13. A computer program product comprising a computer storage medium having computer program logic stored thereon for enabling a processor-based system to classify a domain name, the computer program product comprising: a first program logic module for enabling the processor-based system to identify a dictionary set of character-based n-grams, wherein each character-based n-gram in the dictionary set of character-based n-grams is associated with a pre-established first classification probability value and a pre-established second classification probability value, wherein the pre-established first classification probability value is indicative of whether a corresponding character-based n-gram of the dictionary set is likely to be in a first domain name category, wherein the pre-established second classification probability value is indicative of whether the corresponding character-based n-gram of the dictionary set is likely to be in a second domain name category; a second program logic module for enabling the processor-based system to identify a domain set of character-based n-grams corresponding to a domain name string, the domain name string being associated with a domain name; a third program logic module for enabling the processor-based system to classify the domain name in the first domain name category in response to at least one of the pre-established first classification probability value of a first character-based n-gram in the dictionary set corresponding to a first selected character-based n-gram in the domain set or the pre-established first classification probability value of a second character-based n-gram in the dictionary set corresponding to a second selected character-based n-gram in the domain set being higher than a first classification predetermined threshold and for enabling the processor-based system to further classify the domain name in the second domain name category in response to at least one of the pre-established second classification probability value of the first character-based n-gram in the dictionary set corresponding to the first selected character-based n-gram in the domain set or the pre-established second classification probability value of the second character-based n-gram in the dictionary set corresponding to the second selected character-based n-gram in the domain set being higher than a second classification predetermined threshold.