About browser push
Browser push is designed to push information from a web application to your BlackBerry® device as the information becomes available. For example, you can receive updates for weather reports, stock quotes, or breaking news. When your device receives an update, a new browser push message might appear in the messages application or an icon on the Home screen might change to indicate that new information is available. The web application might also push updated information to your browser cache without notifying you. If information is pushed to your browser cache, the information is available on your device even when your device is not connected to the wireless network. Web applications that use browser push automatically push updates to your device, unless you turn off browser push.
Your device supports different types of browser push messages. Service loading messages and service indication messages include updated information. Other browser push messages include messages that appear in your browser cache.