Microsoft has released Skype 6.19, which adds support for using VoiceOver to select recent searches from the Add Contacts search field. The update also fixes several reported crashes that occurred when sending and receiving files, fixes a crash that occurred when waking from sleep, and ensures that older Mac desktop machines successfully return search results when searching for messages. (Free, 41.9 MB, release notes)
Option-click to Hide Apps Quickly
This trick has been available in the Mac OS for years, but many people still don't know it. If you have too many windows cluttering up your screen, you can hide specific ones easily as you work. When you're in any application, hold down the Option key and click on another app's window, on the Dock, or in the Finder to switch to that other app and simultaneously hide all the windows in the previously current app.
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Special thanks to Edward Imhoff, Jeffrey Proudfoot, Tim Hodgson, and
Malcolm Norris for their generous support!