Yes, I have children and a couple of the men I have met do as well.
You don't tend to give out a lot of personal information intially, until you can trust each other. Not dissimilar to other kinds of Internet dating.
Do I care? We are all adults.
I did chat with someone who had never had an affair, and actually try to dissuade him but he wanted to go ahead.
Yes, you know what they look like. As I said, it's like tinder.
My marriage is celibate, as are many men's. Kik works as a way for people to connect.