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Mobilegeddon is a name given by webmasters and web-developers to the Google's algorithm update of April 21, 2015. The main effect of this update is give priority to web sites that display well on smartphones and other mobile devices. The change does not affect searches made from a desktop computer or a laptop.〔 Google announced its intention to make the change in February 2015.〔 ''The Economist'' found the timing "awkward" because they said "It comes less than a week after the European Union accused the firm..." of anti-competitive behaviors.〔 The protologism is a blend word of "mobile" and "Armageddon" because the change "could cause massive disruption to page rankings."〔 But, writing for ''Forbes'', Robert Hof says that concerns about the change were "overblown" in part because "Google is (providing a test ) to see if sites look good on smartphones".〔 Search engine results pages on smartphones now show URLs in "breadcrumb" format, as opposed to the previous explicit format.〔(【引用サイトリンク】url=http://googlewebmastercentral.blogspot.ca/2015/04/better-presentation-of-urls-in-search.html )〕 == Impact == Based on their data set, software company ''Searchmetrics'' found that the average loss of rankings for the non-mobile friendly sites measured was 0.21 positions on average. Content marketing company ''BrightEdge'' has tracked over 20,000 URLs since the update, and is reporting a 21% decrease in non mobile-friendly URLs on the first 3 pages of search results. A study by search agency ''s360 A/S'' showed that mobile friendly websites have gotten 32% more organic mobile traffic than non-mobile friendly websites. At ''Moz'' they observed minor fluctuations just around April 21, but according to Peter J. Meyers it was “nothing to write home about”. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Mobilegeddon」の詳細全文を読む スポンサード リンク
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