IMDb Top 20 Actress List. A Few Late Notes.

Have any of you read this IMDb list which purports to evaluate the "overall importance and impact" of film actresses across the span of the past two decades. That'd be 1990-2009 (though obviously they're including 2010.) I had somehow missed this list which arrived in September I think but I can't let it go by without some comment. I'm not sure what they mean by "impact" exactly... global fame?