Some Wordpress plugins are often updated, which is good think. Plugins that are updated are 100% compatible with last Wordpress version and they also are the most secure possible. A plugin that has not been updated for a long time might not work with last Wordpress version and might create a security breach for you website.
Youtube Master displays Youtube Playlists or Single Videos with optional Youtube Subscribe Channel button and Google Hangouts.
Facebook Profile Master gives you full control over all Facebook User Profile plugins, Facebook User Badges and Facebook Follow Button.
Amazon Master let's you can automatically display the hottest deals from Amazon making your wordpress a money making machine.
LinkedIn Master, if you are serious about your linkedin connections and want to integrate your personal or company linkedin page into your wordpress.
Weather Master is the heavy duty, professional wordpress weather plugin. Just like on TV.
Facebook Comments Master is the professional integration of facebook comments into heavy duty wordpress websites.
Vimeo Master for let's you integrate the superb Vimeo Video quality into any Wordpress widget position. Only for professional websites.
Reverbnation Master plugs-in perfectly into wordpress and allows you to display all the reverbnation juice inside any widget template position.