Oftentimes, I find that I have let a lot of my questions go unanswered, so I like to go back and mark answers. It's sort of tedious to have to type in
user:me hasaccepted:0 in the search bar every time I want to do this, especially since I am a member of several StackExchange sites.
If there were a link in the main nav bar that would take me to
http://whateverstacksite.com/search?q=user%3Ame+hasaccepted%3A0 then that would be awesome. Right now, I have favorites pointing to search results for the StackExchange site I want to search unanswered questions for, but it'd be nice to be able to get rid of that.