The Lazy Widget Loader plugin provides lazy loading for widgets to improve page loading. Use it on slow widgets, especially those where external data is loaded, like widgets from Facebook, Twitter, AdSense, …
What this plugin basically does is to postpone loading the content of those widgets you choose, so that their content is loaded after the main content of the page that is displayed.
You can choose which widgets should be loaded like that, by default the plugin does not “impose” itself on any widget. You may also choose to display a throbber while the content of a widget is loaded.
Advanced lazy loading integration