WebSite-Watcher 2010 (10.1 Beta-2) has a new Plugin to extract text content from proprietary file formats (eg. PDF, DOC, PPT, …) via the IFilter system. IFilter is the system used by Windows Search to search through files in proprietary formats. IFilters are usually installed by Office Suites, PDF readers, etc.
This plugin supports any file format for which you have an IFilter installed and can typically be used to extract text from PDF files, Powerpoint files, Word files, Open Document files, or even from Open Office files (*.sxw, *.sxc, …) if you have Open Office installed.
The IFilter plugin is not assigned automatically, you have to assign it manually in the bookmark properties (Advanced + Plugin).