If you like to have lots of functionality on your site but are weary of finding and installing third-party plugins, there is one plugin you need to get: Jetpack.
Actually, Jetpack is not one plugin but a suite of plugins that you can access by simply connecting to your free account at WordPress.com. Once connected, you can access a whole menu of plugins created by the folks at WordPress.
Best of all, Jetpack plugins work.
Read more at: Blast Off with Jetpack Plugins
(Ehren: use the Extra Sidebar Widgets for your Twitter timeline.)
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