Mozilla/4.0 (compatible; Linux 2.6.10) NetFront/3.3 Kindle/1.0 (screen 600x800)

http://stackoverflow.com/questions/3588170/what-are-the-amazon-kindle-user-agent-strings

http://deviceatlas.com/node/1292350

Note there are 2 distinct types of Kindle UA's

Kindle 1.0 and 2.0 with Netfront

Mozilla/4.0 (compatible; Linux 2.6.10) NetFront/3.4 Kindle/1.0 (screen 600x800)
Mozilla/4.0 (compatible; Linux 2.6.22) NetFront/3.4 Kindle/2.0 (screen 600x800)

Kindle 3.0 with WebKit.

Mozilla/5.0 (Linux; U; en-US) AppleWebKit/528.5+ (KHTML, like Gecko, Safari/528.5+) Version/4.0 Kindle/3.0 (screen 600x800; rotate)

I believe they use different webkit versions on the different kindle 3.0 editions that they have.

In the Ruby server, the formats are kindle and kindle2. I believe both used the 'simple' layout, but i'm not 100% sure.

Tomasz, as of the new Mobile Frontend extension, shouldn't this be obsolete?

I'm redirected to the mobile site on my Amazon Kindle, 3rd Generation. Seems to be fixed.