Marcia - 2:40 am on May 15, 2007 (gmt 0)

>>clarify

annej, what the OP is doing is a completely different thing altogether. And the whole gist is stated in the first sentence that says the search engine uses phrases to index, retrieve, etc. Comparison is made between indexing based on words and using phrases to index by concepts.

>purpose

Actually it's an IR thing rather than an SEO thing, and probably the most important benefit mentioned, aside from relevancy issues, is the multiplied increase in the size of the index capacity.