3. A method of identifying documents that include a searchable form relevant to a topic, the method comprising: (a) receiving a document at a computing device; (b) determining, by the computing device, if the received document comprises a form, wherein the form includes a field presented to a user requesting information from the user; (c) if the received document is determined to comprise a form, determining, by the computing device, if the form is a searchable form, wherein a searchable form returns non-trivial information to a requestor in response to a submission of the form; (d) if the form is determined to be a searchable form, determining, by the computing device, if the form is relevant to an identified topic; and (e) if the form is determined to be relevant to the identified topic, identifying, by the computing device, the document as a searchable form relevant to the identified topic.
8. The method of claim 3 , further comprising, before (c), identifying structural features of the form wherein determining if the form is a searchable form is based on the identified structural features.