https://en.wikipedia.org/wiki/Wikipedia:Wikipedia_Signpost/2011-03-07/In_the_news#Google_algorithm_update (caused Wikipedia to rise from 7578 to 8050 (+6.2%) presences in the first search result page, in a sample of around 60,000 keywords.)

https://en.wikipedia.org/wiki/Wikipedia:Wikipedia_Signpost/2006-11-06/Search_and_Wikipedia ("Wikipedia appeared in the top 10, thus putting it on the first page of results, on 81% of searches using Google and 77% for Yahoo.")

http://stats.wikimedia.org/wikimedia/squids/SquidReportGoogle.htm ("Google referred to our sites, through its services including search, maps, and Google Earth, 212,902,650 page views per day, representing 41.1% of our external page requests. ")

On Thu, Nov 15, 2012 at 2:59 AM, Finn Årup Nielsen <fn@imm.dtu.dk> wrote:

Hi Phoebe (and others on the list),

On 13-11-2012 21:47, phoebe ayers wrote:

Are there any solid estimates out there of how many Google [or other]
searches have a Wikipedia article as the first [or second or third...]
hit? Any language breakdowns of this would be super cool as well.

If you look in my "Wikipedia research and tools: Review and comments."
http://www2.imm.dtu.dk/pubdb/views/edoc_download.php/6012/pdf/imm6012.pdf
on page 15 "Popularity" you see a couple of studies using a sample of pages:

"Seeking health information online: does Wikipedia matter?"
http://jamia.bmj.com/content/16/4/471.long

http://www.conductor.com/blog/2012/03/wikipedia-in-the-serps-appears-on-page-1-for-60-of-informational-34-transactional-queries/

http://www.intelligentpositioning.com/blog/2012/02/wikipedia-page-one-of-google-uk-for-99-of-searches/

The first one reports around 35% health related queries having Wikipedia on top of of the Google result list.
http://jamia.bmj.com/content/16/4/471/T1.expansion.html

I've seen offhand references to this phenomenon in many papers, but
I'm wondering if someone on this list knows of a particularly good
estimate or reliable information.

Google has become 'bubbled'. You could try DuckDuckGo instead, e.g.,

http://duckduckgo.com/?q=Alzheimer+region%3Anone

See also: http://dontbubble.us/

/Finn

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