Powerset - small miracle

What´s that?
Powerset is one of the modern search engines which tries to facilitates the retrieval in Internet as much as is possible. This search engine arose in San Francisco in 2005 and was founded by Foundation Capital, Founders Fund, Paperboy Ventures and other investors. In 2008 was Powerset acquired by Microsoft.
The whole engine is applied on Wikipedia and Freebase that means that the among of information is limited by among of information consist in these databases. This product was launched in May 2008, thus that means that it´s really young, but in my opinion very succesful.

How does it work?
The basic think, which brough me to this search engine is the use of natural language. It is possible to add query in short version, as we are used from classic search engines, as topic or key keyword. But then is here possibility to add normal question in natural language as for example "How many people were evacuated from new orleans during hurricane katrina?" or "How old is Barack Obama?".
System is able to decomposite this natural language structure on necessary keywords containing the meaning of the query and then use traditional fulltext search method. The result is not just the list of the articles in Wikipedia which consist the answer, but also the clear answer on question in the heading, if its possible. Which means if he hasn´t differently information.
Powerset than provides further searching in articles. Is able to extract thetable of contents which is helpful for further searching. Offers two different views on article and also the link to the original article.
The system is always improving. There are such small details as possibility to highlighte the important parts of text and send it to someone else, which means that he get the same text with the same marks in the text. Simply but very worthwile.

Conclusion
Powerset is one of my favourite search engines. You know how I am exacting...
The point is not in the use of natural language, although I was surprised how well it works. The main point and advantige of this search engine is in his sophisticated structure. Its easy, well aranged and with cosy design. It offers tools as table of contents which really helps and make faster the searching.
I am really curious how it will grow on.