Enable Ubiquity to Grab "Hovered" Text for Commands

One of the things that got me hooked to Apple's Mac OS X Safari browser for such a long time was its ctrl+cmd+d command that's used to define words that are highlighted or hovered over with the mouse cursor. While I understand that Mozilla is aware of this feature's absence and its desirability for the organization's Gecko-based web browsers (https://bugzilla.mozilla.org/show_bug...), I've just realized Ubiquity's potential to make it obsolete.

If I only desire to perform a command on a single word of text, enabling an option for Ubiquity to grab a word that my mouse cursor is currently hovering over would eliminate the highlighting step. Not only would this make Ubiquity ideal for power users, but it would help Mac users feel at home with its greater consistency with native Mac OS X applications. This, combined with access outside of the browser (http://getsatisfaction.com/mozilla/to...) and hotkey command activation (http://getsatisfaction.com/mozilla/to...) would give Ubiquity the functionality that users of other browsers could only dream of.

I understand that some users may not be as thrilled about this feature as I am, and that they may perceive it as an annoyance to have to keep the mouse cursor away from text in order to perform an impromptu search query, email a link to the current webpage as opposed to an excerpt, etc. As a compromise, the most popular of the two options would be Ubiquity's default behavior (which could perhaps differ based on OS release), and the other could be accessed via about:config.