It still works. You just need to use the GET API for reliable results. E.g. Friends of friends /friends/friends" rel="nofollow">https://www.facebook.com/search/ /friends/friends Mutual friends of two people /friends/ /friends/intersect" rel="nofollow">https://www.facebook.com/search/ /friends/ /friends/... Photos where both people are tagged /photos-tagged/ /photos-tagged/intersect" rel="nofollow">https://www.faceboo…
How likely is it for Facebook to block you for attempting to use these APIs rather than the public Graph API?
But assuming it wasn't... How likely? How can one answer such a question?
It presumes their use is counter to FB interests
On that I disagree. Yet assume that is instead true.
Even then I feel there are far many more interests that weigh on the side of using these than on blocking them. So I predict they will remain open