Normally one of the main problem while using mobile web applications is the connection troubles rather than that latencies in the data network also affects application performance. Googles initiative google gears mobile solves this problem by making the mobile web application that can also work in off line mode. Google gears is now available for internet explorer in windows mobile 5 and 6.
Then we probably get the doubt how data can be stored when the application is off line.The solution is, it use local store and when the device get online the data will be synced with server. Google gears use 2 types of syncing mechanism manual and background syncing.
Google is now working to the develop application that work with other browsers and android version. Lets start develop your web application also with google gears mobile