Research white paper link compilation titled "Web Data Extractors" is a 16 page research paper listing many resources both new and existing that will help anyone who is attempting to find information and knowledge research about web data extraction on the Internet. It is freely available as a .pdf file (611KB) at the above link from the Virtual Private Library™ and authored by Marcus P. Zillman, M.S., A.M.H.A. It was updated June 17, 2009. Other white papers are available by clicking here.