If any one has more than one page to their blog/s then its good if they are organized in a good manner so it is easy to browse with page by page. There is one widget plugin available which calls Multi Pages Widget which makes easier to organize pages into sidebar. It is the normal page widget with an option of title and sub pages.
Usage: In the Themes->Sidebar Widget one can see in the available widget section the Multi Pages Widget which can be drag and drop on sidebar. One can create Multi Pages widget by using the menu at the bottom. One can add a Title which should be displayed in the title of the widget. If one can leave the title empty only the root page title will be displayed. If a page does not have any child pages this widget is not displayed.