Is it possible? If not, can it be as a feature request? :)
From my original answer here:
I think the most flexible solution would be to add a search parameter
This plays well with all the existing search parameters.
Since everyone's favourites are public anyway (and are included in the data dump), I don't see a problem exposing this type of feature in search.
I currently have 1850 questions favorited for various reasons. Many of them have good answers in them (I can't favorite answers, grrr) or otherwise have information relevant to me. Some of them I want to track over a period of time. Some are just amusing or otherwise illustrative of programmer peculiarities.
I would welcome some kind of search facility on my favorites, even if it just found a keyword or two in the text of the questions or answers, or if I have to use a special string in Google to accomplish it.
Actually, filtering the favorites on a specified tag would work too.
UPDATE: infavorites:mine has been implemented.
I have found stackoverflow favorites organizer by googling.
It works well in Chrome but I had issues with it in Firefox. Not perfect but I managed to find the question I was looking for reasonably quick.