Some of the ads on here make statements like the following:

"I accept Date-Check, Preferred411 & TER Whitelistings."

What exactly are these, what information do they ask you for, and is your privacy safe if you register with them? Any idea which is safest? I assume that date-Check and Preferred411 are similar to each other, but what is TER Whitelistings? Is there a monthly fee to be listed with any of these services?

Thanks for any guidance you can give me.

I use Date-Check and find it safe and helpful. There is a fee associated, but not unreasonable.

I use P411...

The work verification was simple and very discreet.

What if you aren't working? Does that mean you are out of luck?