Earlier quoted context omitted.
Search operators are super powerful and awesome to use in google - providing a way to use those from the browser itself can help provide a distraction free environment, but also opens up new possibilities: bm:“tag" - show list of all bookmarks with that tag Just a thought.
Windows tried to do that with their search (in Vista, 7, and 8). It has been a disaster. Hidden functionality is a UI and UX anti-pattern. How do people know to type "bm:" for Bookmarks? Google? Is a Google search now part of the UI's workflow? Or will people simply stop using Bookmarks because it is so obscure (you're seeing this with mobile browsers, Bookmarks are hidden so go unutilised). Ditto with Windows. In Wi…
I'm a fan of the style of gmail's advanced search (for example), which has all the various fields to fill in if you drop it down, but then when you execute the search, it converts them into the search operators, thus teaching you how to use them (if you care enough to pay attention...if not, the field boxes are still there for you to use).