I finally figured out the Facebook search bar trick!! So for years there's been this rumor that the search bar is the key to finding out who views your FB. They say it's just a legend... Not really!! So legend has it that if you type in a letter, the first result is either the person you searched for/looked at last... Or if you never have, that person has looked at you! Or they search for you frequently, or both.
( It also works based on interaction, for friends especially, but I have found this to work for friends who never interact with you, as well as friends of friends who have never had interaction.)
So I conducted a little experiment and found out that the trick does work - but ONLY IF YOU'RE BOTH SEARCHING for each other! That's the missing link. I had someone view me... Nothing. They were still in position 4 down from the top. I search for someone else, who has not viewed me, and nothing - they're still a low result. But then I search for the person who viewed me on the same day, and boom! Less than 3 hours later, they were result number one when I typed in their first or last name initials!! Incidently, this works for friends, or friends of friends, even those who only have one mutual friend in common with you!
(Important: don't try to cheat by partially typing their name. First initial only, for first or last names! Also, this works for the full-site FB, which I use on my phone as a modification to the mobile FB. It does not work with the iPhone app.)
If you search for someone, friend or not, they will still show in your top 5 results for up to a day or so, then they rank lower and not even show in your top 3 if you don't search again. If you search for someone and they instantly (about 3 hours later) rank 1st after that, they've been searching for/looking at you too! If they eventually drop in ranking, either another one of your friends with the same initials interacted with you recently, or you're the only interested party...
Of course, this will be difficult to track if you're stalking them and click on them several times a day, LOL! But I've found that one single search is enough to set it off. ( I keep track of my searches by using the search log. Clearing your searches can throw off results after a couple of hours, too.) I've tried this experiment on multiple days... Same results. (In case you're wondering where I find the time, the answer is that I don't sleep a lot!)