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Big amount of information is available in textual form in databases or online sources, and for many enterprise functions (marketing, maintenance, finance, etc.) represents a huge opportunity to improve their business knowledge. For example, text mining is starting to be used in marketing, more specifically in analytical customer relationship management, in order to achieve the holy 360° view of the customer (integrating elements from inbound mails, web comments, surveys, internal notes, etc.).
Facing this new domain I have make a personal research, and realize a synthesis, which has help me to clarify some ideas. The below presentation do not intent to be exhaustive on the subject, but could perhaps bring you some useful insights.
Text Mining Synthesis: http://www.decideo.fr/bruley/docs/1___text_mining_v0a.ppt