Jean Bedord's summary of KM World & Intranets 2007 Conference hits few important points. She highlights the value that semantic web and faceted search bring to improving user experience and findability.
"Increasingly, behavioral and linguistic aspects are being recognized as essential factors in the process of adding value to the organization. Search is not easy, and delivering answers to people is not straightforward." [bolding is mine]
When we search, we are all looking for answers and solutions, and we are not there yet....
As Bill Gates said in 2005 ""People are very impressed at what search is today but it's really quite poor compared to what it should be"