This is interesting for a couple of reasons:
1) Powerset, which I wrote about yesterday regarding its Xerox (XRX) deal, and in November 2006 regarding its nearly $13 million in funding and some $40 million valuation, is an impressive search engine that actually improves upon the search experience.
2) Bezos is definitely interested in improving the search experience with Amazon's A-9 search engine. A-9 is a fairly useful search engine, but it could use some improvement. Maybe a linguistics component might help.



