Back to the OP. I had been on Facebook for a little while. I joined it when I received an invitation from a friend. Soon, I was getting invitations from friends of friends, and "Other persons you may want to be friends with." It was to the point that I never knew I had that many friends, and some on here will state I really do not.
I was concerned with the information contained on Facebook. There are items that yo can check off as not being public, but still, you cannot control what the people that are posting on "your wall" the information that may be forthcoming.
I used to be, and maybe still am, very good in social engineering. That's when I drop a name at you and you start confiding some information which may involve other 3rd party persons. Then they are queried and provide other information. It takes time, but a lot of information can be gathered. Some of it I would just as soon not have publicized. Trip specifics, schedules, any time away from home can invite the "lurkers" into something that may not be legal.
I deleted my account on Facebook. It took a few weeks for it to go through, but it was deleted. Although nothing on the Internet is every completely deleted. Once something is posted to the Internet it is there forever (with reservation). All the email that is sent is maintained for a specific period of time, and law enforcement can, with proper documents, obtain copies. I have recently re-opened an account on Facebook, and to my knowledge everything about me is "private." (to whatever degree that can be achieved.)
"Spammers sometimes use various means to confirm addresses as deliverable. For instance, including a hidden Web bug in a spam message written in HTML may cause the recipient's mail client to transmit the recipient's address, or any other unique key, to the spammer's Web site. Users can defend against such abuses by turning off their mail program's option to display images, or by reading email as plain-text rather than formatted."
So unless you do not browse the internet, you may be susceptible to email harvesting.
Facebook may be a useful tool for some people, but it is not for me, nor are any of the other so called social networks. I prefer to call on the telephone, or send an email. I refuse to "text," and there should be a law in every state prohibiting it while driving. Maybe even a law against using a cell phone while moving. I receive my Escapee information from email and by visiting their web site.
All Cajun1 did was report that Escapees are now on Facebook. It may be something for you.It is not for me.