Patent ID: 8037079

Claim:
A method for filtering unsafe content items, the method comprising: automatically identifying a first subset of content items as unsafe content items from a set of content items; classifying a second subset of content items from the remainder of the set of content items not automatically identified as unsafe content items from the identification of the first subset of content items, the second subset of content items classified according to a classification hierarchy; identifying a plurality of unclassifiable content items from the remainder of the set of content items not automatically identified as unsafe content items from the identification of the first subset of content items and cannot be classified according to the classification hierarchy; automatically identifying a third subset of content items as unsafe content items from the plurality of unclassifiable content items, the third subset of content items identified according to a similarity to the first subset of content items; receiving manual identification of a fourth subset of content items as unsafe content items from the plurality of unclassifiable content items; and automatically identifying a fifth subset of content items as unsafe content items from the plurality of unclassifiable content items, the fifth subset of content items identified according to a similarity to the fourth subset of content items.