The 5 to 6 percent figure is not scientific, it is based on several members sharing their log file statistics in a Cre8asite Forums thread.

Those that did the leg work to figure out how many people they see come to them via a "did you mean" from Google is on average between five and six-percent. Typically, people are noticing a lower percentage, between one and two-percent, using spell checking features on Yahoo.

Here are some quotes from the thread:

I noticed that an average of 5 to 6% of all visitors from Google used the spell-correction to make it to my site.

Google: 6.7% misspelled, 0.4% I'm feeling lucky

Yahoo: 5.6% From related (rs=0), 1.0% Misspelled (SpellState)

The related does not mean spelled wrong but the misspelled does, in Yahoo's case.

Misspellings in Googe: 5.3%

Misspellings in Yahoo: 1.7%

Misspelled Google: 4.3%

Misspelled Yahoo: 0.8%

It is fairly interesting look at search referrers. Maybe one day, I'll dig deeper and take a look in our statistics for these metrics.

Forum discussion at Cre8asite Forums.

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