Net Applications data for January is out, and there are some interesting trends displayed.

First, the data shows that Google’s Chrome browser has managed to snatch usage share from Internet Explorer and Firefox.

Here’s the data:

• Chrome: 5.20% (up from 4.64% in Dec ‘09)
• IE: 62.18% (down from 62.69% in Dec ‘09)
• Firefox: 24.41% (down from 24.61% in Dec ‘09)

Note: While we may debate as to whether Net Applications is a reliable metric or not, Mozilla both accept and use its data in its PR propaganda.

Note that this is the second month in a row that Net Applications has shown a decline in Firefox usage.

I noticed over the holiday period that Google was aggressively pushing Chrome through ads, even going as far as to offer customized downloads that could be sent as gifts via email.

The top browser spot has also changed hands, now belonging to IE8, with 22.31%, beating IE6 (20.07%). Still far too many people browsing the web with IE6 …

In other news, Windows 7 global usage share hit 10% on January 31st. Overall, Windows 7 ended January with a 7.51% usage share (leaping ahead from 5.71% for Dec ‘09). Also interesting is the data that shows that Redmond WA, home of Microsoft, shows the highest Windows 7 usage share within the US, a robust 42%.

Overall, Windows usage is down to 92.02% (from 92.21% in Dec ‘09 – even strong Windows 7 gains can’t halt the slow erosion of Windows usage share), Mac is up to 5.13% (from 5.11% in Dec ‘09), which I admit probably isn’t significant, and Linux is unchanged at 1.02%. iPhone OS platform is also up marginally to 0.47% (up from 0.44% in Dec ‘09).

Net Applications measures operating system usage by tracking computers that visit the 40,000 sites monitored for clients, which represents a pool of about 160 million unique visitors each month. This data is then weighted based on the estimated size of each country’s Internet population.

Adrian Kingsley-Hughes blogs.zdnet.com