I just read through the Google Blog on BlogSpot. Knowing that display top 20 Google subdomain in Google.com table in order to understand the popularity of Google’s varied services.like below.

Seem like mostly Web Surfer is using Google Services is more on Google search engine than other Google services. The top three services is Google Search Engine, Google Image Search and Google Mail.

Here is some source from Google Operating System about last year top 10

In November last year, the first 10 Google services were:

1. Google Web Search: 79.9%
2. Google Image Search: 9.2%
3. Google Mail/Gmail: 5.6%
4. Google News: 1.6%
5. Google Maps: 0.8%
6. Froogle: 0.7%
7. Google Scholar: 0.6%
8. Google Groups/Groups 2 Beta: 0.5%
9. Google Print (Google Books): 0.4%
10. Google Earth: 0.3%

i think some of services is still new, perhaps in future will be improved.

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