I've noticed that recently when I enter a letter into the search bar, the first person that comes up isn't a friend of mine, but the rest are. Does anyone know why this person comes up first?
Normally it will list your friends. If not it will list the recommended friends like friends of friends
The search is performed across all Facebook, not just across your group of friends and the results returned take into account several parameters, not just your friends: it might be that you searched for that person in the past, or that you visited his/her profile, or that is friend of friends. Or is somewhat famous, thus having a higher “search rank.”