Google comes with a new GoogleBot which is picking up its speed tremendously. This new bot has been visualized by several other Webmasters, as the bot explores their websites. The Google spider has the User Agent; "Nokia6820/2.0 (4.83) profile/MIDP-1.0 Configuration/CLDC-1.0 (Compatible; GoogleBot-Mobile/2.1; +http://www.google.com/bot.html)" and comes from a Google IP address. To many it was an interesting feature, while for few it raised issues.
The main point to notice here is that the transcoding translates the page and strips out some html data, which is a concern factor for some of the users. You can find a complete section on the Google Remove URL page under the Remove transcoded pages anchor.
Mobile works as an important source to Google. They have even added mobile search queries to Google Sitemaps recently. However, the Google Web Search permits its users to search the content stored in the Google index for desktop web browsers. But, because the content does not focus on the mobiles and its related devices muight not get displayed, Google transcodes the pages automatically. All this is done by analysing the original HTML code which is then converted into a mobile-ready format.
It is also stated that Google may resize, adjust, convert images, text formatting or other elements of the web page functionality, so that you get the highest quality web page on your mobile phones.
Let's see how far they succeed in this task!