We haven't had any friends babysit... but if they were parents too, then I would probably trust them.

I would have to see that their house was babyproofed though, just because that would tell me whether or not they are serious about safety. Probably overkill on my part, but if something happened to Charlie because I trusted the wrong person, then I would have a hard time forgiving myself.

Do you trust any friends to babysit your LO? What convinced you that you could trust them with your kid?