15. A method for automatically constructing wrappers across a plurality of domains, executed by a processor, the method comprising: identifying a first target string that is consistent or near-consistent across the plurality of domains, each of the plurality of domains comprising one or more documents common to at least one other of the plurality of domains; creating a first wrapper for a first domain from the first target string; extracting additional target information based on the first target string from one or more documents in the first domain; searching domains in the plurality of domains other than the first domain to determine if any of the other domains comprises at least one document having at least one portion of the additional target information; and creating a second wrapper for at least one of the other domains in the plurality of domains based on the first target string and extracted additional target information.
15. A method for automatically constructing wrappers across a plurality of domains, executed by a processor, the method comprising: identifying a first target string that is consistent or near-consistent across the plurality of domains, each of the plurality of domains comprising one or more documents common to at least one other of the plurality of domains; creating a first wrapper for a first domain from the first target string; extracting additional target information based on the first target string from one or more documents in the first domain; searching domains in the plurality of domains other than the first domain to determine if any of the other domains comprises at least one document having at least one portion of the additional target information; and creating a second wrapper for at least one of the other domains in the plurality of domains based on the first target string and extracted additional target information. 19. The method of claim 15 , further comprising removing each domain for which a wrapper is created from a set of search domains.