I experimented to see how long it would require for me to find someone I know who is on numerous sites, and at the end of a couple of hours, I gave up.
I know there are trojan key stroke programs that can be sent to a computer, but then it isn't an accident, and also, it's illegal.
Take these sites with a grain of salt, while keeping in mind there’s no hell like a woman scorned who also has access to the internet.
Remember that we are the largest free online dating service, so you will never have to pay a dime to meet your soulmate.
Even if you know a person is on a specific site, it requires some time and lots of patience to find them without a user name, especially if that person changes some little thing about themselves.
Just going through all the pictures is a hassle, and then trying to recognize someone from a profile without a picture is almost impossible.
Once you are sure this is not the case, then should definitely put on your gloves and detective hat then start some digging around.
If you read the web, you will find a lot of older articles telling you what signs to look out for when it comes to infidelity.