Kind of seems like a no-brainer to me. I mean, I would NEVER list any of that on an application. How are they gonna find out? Unless you are stupid enough to be using the sites while at work on a work computer.
Well you’re name is on the application, so they can search he site for people with that name, and usually the location and a picture show up in the hit list. So it’s pretty easy to tell if you have an account. I’d let them no I have the account but no way I’d give them my password, just on general principles.