1. A method for detecting indicators of misleading content in a markup language coded document, said method being implemented using a computer, said method comprising: extracting a set of tags from said markup language coded document, said set of tags having been included in said markup language coded document before said markup language coded document is received by said computer; combining tags of said set of tags to create a tag structure signature, said tag structure signature being configured to include a set of n-grams, each n-gram of said set of n-grams including at least two tags from said set of tags; removing attribute values from said tags of said set of tags before performing said combining; and comparing said tag structure signature against a set of known tag structure signatures to determine similarity.