FreewareFiles.com has a nice PDF text extraction tool. From the description:
Ease Pdf to Text Extractor is a free software designed to extract text from Adobe PDF files. It does NOT need Adobe Acrobat software.It processes at very high speed and you can convert multiple PDF files to text files at one time. The program is freeware, which means that you can use it either personally or commercially for free.
Warning: a few dynamic ads on this site.
http://www.freewarefiles.com/Ease-PDF-To-Text-Extractor_program_43618.html

Business Wire put a presentation online about
Taxonomies continue to be a very popular topic. See our Taxonomies page here on this site.
shows simply how to remove a word using the replace method (based on our favorite, regex), while his second post has a great little function for searching for text that uses a recursive search for nodes that contain a pattern. It includes a cool demo of its capabilities as a link right under the code listing.