Nielsen: Google Hits New Search Share High

Another ratings service shows Google hitting an all-time high for search
share in the United States. This is according to April 2008 search share stats
from Nielsen Online that were
released (PDF)
today. Last week, Hitwise also reported Google hitting a new record. Microsoft
also dips below the 10 percent mark for the first time.

Here are the percentage shares for the top five search engines shown in the
pie chart above:

Google: 62.0%
Yahoo: 17.5%
Microsoft: 9.7%
AOL: 4.3%
Ask: 2.1%

Note that in the chart above, traffic from Ask.com-owned
My Web Search is not combined by Nielsen
with the Ask figure. If it were, the Ask figure would rise to 2.8 percent.

The trend over time? Here’s data going back to November 2007 (data from
previous periods doesn’t compare because Nielsen
changed its methodology):

Google hit a new high, up from its previous high
last month. Both
Yahoo and Microsoft hit new lows after previous lows last month, but Microsoft’s
was more dramatic.

How about number of searches versus market share?

Google: 5.1 billion
Yahoo: 1.5 billion
Microsoft: 796 million
AOL: 352 million
Ask: 172 million

The trend:

Caveat Time!

As a reminder, my general rules when evaluating popularity stats:

Avoid drawing conclusions based on month-to-month comparisons. Lots
of things can cause one month’s figures to be incomparable to another month.
It’s better to see the trend across multiple months in a row.
Avoid drawing conclusions based on one ratings service’s figures.
Each service has a unique methodology used to create popularity estimates.
This means that ratings will rarely be the same between services. However, a
trend that you see reflected across two or more services may give you faith in
trusting that trend.
Consider Actual Number Of Searches: While share for a particular
search engine might drop, the raw number of searches might still be going up
(and thus they might be earning more money, despite a share drop). This is
because the "pie" of searches keeps growing, so even a smaller slice of the
pie might be more than a bigger slice in the past.