If you had any doubt that one particular player is (literally) synonymous with online search, take note: not only do more than eight times as many Australians visit Google in an average four week as either of its primary ‘competitors’, but 99% of people who do use Bing or Yahoo!7 also use Google, Roy Morgan Research website visitation data shows.
In 2015, 16,903,000 Australians 14+ (86%) visited the Google Search page at least once during an average four week period, while 1,929,000 visited Bing and 1,820,000 visited Yahoo!7. However, while 1.9 million unique visitors per four weeks is certainly nothing to sneeze at, nearly all of them visit Google too.
The chart below is hard to make clear (you might need to adjust your screen resolution!). The orange slivers on top of the Bing and Yahoo!7 columns represent those 20,000 or so Australians who visit that search page in an average four weeks but not Google as well—in each case, only around 1 in 100 visitors.
But Bing and Yahoo!7 visitors don’t just also visit Google—they spend far more time Googling than they do Binging or Yahooing.
Google Search visitors averaged a touch over 2.5 hours each on the site in an average four weeks in 2015, for an estimated total of 552 million hours of national Googling over the year.
Although Bing and Yahoo!7 have similarly sized unique audiences reach in an average four weeks, the time those visitors spend on the site differs dramatically.
Bing visitors spend almost 24 minutes on Bing on average during a four-week period, for a combined national Bing time of not-quite 10 million hours last year. These visitors also spend an average three hours on Google—half an hour more than the average Googler.
However Yahoo!7 Search visitors spend only a little over seven minutes on the site each on average (tallying less than three million hours in 2015). Another 2.5 hours is spent on Google.
That is, Australians spend more time searching on Google in around two days than they do on Yahoo!7 Search in a whole year—and it takes a whole week to surpass Bing.