Detailed analysis comparing BING to Google (must read)
First the bad news for Bing. It overlaps Google too much. On our test queries it overlapped Google 29% of the time, more than Yahoo (25%). Kendall?s tau was much closer however (0.105 vs. 0.102).
The good news is that Bing is pretty close on ranking. On this query set Bing gets a 65, Yahoo a 66.5 and Google a 67. These differences are significant at 99% confidence level.
The ratio of spam in the results was the biggest factor. Bing had 2.9% spam, Google had 2.56% spam, while Yahoo had 4.9%. Having double the spam of Google must be holding Yahoo back from gaining search share
The good news is that Bing is pretty close on ranking. On this query set Bing gets a 65, Yahoo a 66.5 and Google a 67. These differences are significant at 99% confidence level.
The ratio of spam in the results was the biggest factor. Bing had 2.9% spam, Google had 2.56% spam, while Yahoo had 4.9%. Having double the spam of Google must be holding Yahoo back from gaining search share
Interesting note on "spam". The full report can be found here: http://www.cuil.com/info/blog/2009/0...-is-bing-doing
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