Suppose I search for the tag [Python]. I should be able to have a tab that would display all of my favourites for Python. Don't make me think.
I think a more flexible solution would be to add a search parameter
infavorites:x that would allow searches on people's favourited questions.
x would be one of:
- A numeric user id
mine, a shortcut to search your own favourites
all, to search in all users' favourites
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.