BillyS - 11:53 pm on May 12, 2011 (gmt 0)

Can someone please tell me the difference between "explicit core search share" (Google down 0.3 percentage points) and "total core search share" (Google up 0.1 percentage points). Great question, graeme_p. I've been reading and reading the article and I still don't understand the difference.

Danny Sullivan has an interview on this topic [searchengineland.com...]

In a nutshell, Explicit Core Search does not include contextually-driven searches. For example, someone reloading the page to view slideshow pictures. Explicit core is supposed to be "true" search engine queries. If you read the full explanation, neither measure seems like the measure a webmaster would be interested in...