A quick how-to today: Apple released Safari 5 this week and one of the major new features is support for Firefox-style extensions. A few interesting ones have appeared (Instapaper!) but I couldn't figure out how to add them at first. It turns out the extension support is hidden in a "Develop" menu! Here's how to enable Safari 5 extension support: Install and launch … [Read more...] about How To: Enable Extensions in Safari 5 for Mac OS X