SevenCubed - 7:40 pm on Jan 18, 2011 (gmt 0)
As much as I would like to see the playing field leveled I always take these month-to-month results with a grain of salt. Share of searching eyeballs has to be very difficult to quantify and qualify.
Such as; Google's market share may not be as large as we think when you take into account that many webmasters go to Google to check the position of their websites or those of their clients in search results. In fact they probably perform many searches using different keywords. Many of those same webmasters don't bother doing so in other search engines because they simply don't care where/if they rank in them. That can inflate the search figures quite a bit for Google.
By the same token, to say that Google's success rate of producing a valid result that inspires a searcher to follow through to a website is only 65% may not be accurate either. All those webmasters checking results to see where the sites they manage are sitting in SERPs probably don't bother to click through.