Via LLRX.com – Deep Web Research 2011: Internet research guru Marcus P. Zillman’s comprehensive, extensive guide focuses on how expert search engines have written algorithms to mine the deeper portions of the web by targeting file formats such as .pdf, .doc, .xls, ppt, .ps. and others. These files are predominately used by businesses to communicate information both within their organization and to those outside enterprise systems. Searching for this information using deeper search techniques and the latest algorithms empowers researchers to obtain a vast amount of corporate information previously unavailable or inaccessible. Research has also shown that even deeper information can be obtained from these files by searching and accessing the “properties” information on these files.