Chossing "hasnotice:1" as search option, gave back all question, where a bounty is active. Shouldn't it be called "hasbounty" then?
Or what else is it good for?
There are different types of post notices other than just bounties. We just don't have any of them used right now. Try it on meta.SO or on stackoverflow and you will see different ones: there are "current event" post notices, there are "Lock/Protect" post notices, and more.
Just for laughs, I put on a "current events" notice for your post here. Try searching on Meta with
hasnotice:1 to see it.