People at onestat.com have made an analysis of over 2,000,000 search queries and came with an interesting result:
Of all the search phrases world wide, 28.91 percent of the people use 2 word phrases, 27.85 percent use 3 word phrases and 17.11 percent use 4 word phrases. Less and less people use now 1 keywordsince the last measurement in July 2005.
I bolded the most important thing in this quote, in my opinion: it is not as important as it was to optimize your pages for one word queries. As people get more and more Internet savvy, they realise it is a lot more practical to search for multiple words, as it will be more likely they will find what they are looking for.
Though most SEOs already knew this, still, a report makes it a lot more official.
Source: SearchEngineWatch
