TextDigger Semantic Tagging and Search

I have been examining Semantic Web applications and automatic tagging approaches. TextDigger makes the claim of doing this. Exploring.

" ... TextDigger's technology reads the content of a Web page and automatically generates semantic tags. These tags go beyond simple keywords to reflect concepts and context--that is, what the words mean and how they are used. In turn, this richer indexing enables greater findability ... TextDigger was founded by a group of former CNET employees and executives who developed CNET Review's automated product briefs system that generates readable, evaluative review-like pages for tens of thousands of CNET's products.... "