The Evernote blog has a helpful new video for Google Chrome users, showing them how to get Chrome to search their Evernote accounts directly. Firefox users can achieve the same results with Ubiquity (0.1.9.1) by copying this code into the Ubiquity command editor or by subscribing to this command feed.
My sincere apologies to those of you who may have had your Ubiquity Evernote search command feed disrupted. Please resubscribe using the updated links above.