Useful, but has performance issues Rated 3 out of 5 stars
Useful add-on for those who use Evernote regularly to clip snippets to their Evernote account. However, I've noticed that it queries the "evernoteclips" folder in your profile directory every second or so. If you have a SSD (or just don't want to reduce disk life), please keep in mind that this will eat disk cycles. A setting to control this behaviour would be preferable.
Edit: Bug here. https://bugzilla.mozilla.org/show_bug.cgi?id=902195