Are college/high school students rebooting their Facebook accounts when they look for jobs?

I know some people who have gone the fake-last-name route. Cops and teachers, mostly. Personally I've never seen any reason to, but then again I try to keep everything on Facebook and G+ inoffensive enough that it could be printed out and passed around my workplace or neighborhood without causing me any harm. I think that's pretty much a good rule to live by.

I have a number of friends who have turned the privacy settings all the way to the max on their old accounts (to keep up with friends, older contacts, keep tagged photos, etc.), and meanwhile start new alternate accounts with new email addresses that are basically barebones and public-facing. That way, new contacts (people searching them for work, etc.) see the public one, and don't look for the private one (I've heard some companies that get suspicious if you have a private account or no account at all).

You can change the privacy of all old posts with an automated tool now- I did that when I added some people to mine.

I had pretty much mined my past for all it was worth and did a complete reboot, waiting the 2 weeks or so for the old account to disappear. With the new account, I pretty much excluded all my relatives and people from high school. I am 53, and that ancient history has no place in my current life.

I'm a 20-year-old male. My profile is pretty locked down. It's not connected to any usernames I might do something dumb with (like, say, this one), it's set so the public can only see very little if any info, and then within my friends I have a group called "Old" that I lock down pretty tightly and put co-workers, bosses, teachers and parents in. And as far as being savvy, we ought to be... it's our technology.

I've noticed a lot of people with disemvoweled names, so that John Smith has turned into Jhn Smth. This won't show up on a search for "John Smith" but you can still puzzle out who the person is when they comment on your stuff.

I have things locked down so that nobody can see anything unless I've added them as a friend. Also, I don't add people as friends unless they're actively involved in my life. I don't quite get why more people don't just take this route.

I know a number of people who've just changed their names on Facebook and left it at that. Occasionally it leaves me slightly confused as to who Mario is and why I have his updates on my feed. I don't think any of the ones I know have bothered setting up other Facebook accounts to be their professional selves or anything.

I've seen several job-seeking college students change the names on their accounts so a prospective employer won't find them by a search on their real names. Often in addition to locking down the privacy on their accounts pretty tight. (They're more savvy than you might think about such things, or perhaps it's just that the ones I know are a non-representative sample in that regard). Haven't seen any who have deleted their accounts entirely (which doesn't mean it doesn't happen, of course, but I think very few go that far).