11. The method of claim 3 , further comprising: (f) if the form is determined to be relevant to the identified topic, identifying a hyperlink to the received document; (g) updating a link classifier based on the identified hyperlink, the link classifier estimating a distance between a received hyperlink and a potentially searchable form; (h) ranking a plurality of hyperlinks based on the updated link classifier; (i) selecting a next hyperlink from the ranked plurality of hyperlinks; (j) receiving a second document pointed to by the selected next hyperlink; and (k) repeating (b)-(j) with the received second document as the received document until a stop condition is satisfied.
11. The method of claim 3 , further comprising: (f) if the form is determined to be relevant to the identified topic, identifying a hyperlink to the received document; (g) updating a link classifier based on the identified hyperlink, the link classifier estimating a distance between a received hyperlink and a potentially searchable form; (h) ranking a plurality of hyperlinks based on the updated link classifier; (i) selecting a next hyperlink from the ranked plurality of hyperlinks; (j) receiving a second document pointed to by the selected next hyperlink; and (k) repeating (b)-(j) with the received second document as the received document until a stop condition is satisfied. 14. The method of claim 11 , further comprising, after (i), removing the selected next hyperlink from the plurality of hyperlinks.