I installed the latest version of the Evernote Web Clipper from the App Store, and it worked exactly once. Now, every time I hit the Clipper button in Safari, it loads up a new tab with a "The Evernote Service is temporarily unavailable" message. However, if I go into Chrome or Firefox, the extension works totally fine. Uninstalling and reinstalling the extension, and doing a total reboot hasn't fixed the problem. Didn't know if there's actually some sort of Safari-exclusive outtage or just some sort of glitch.