B.B.
I actually am a sitter on sittercity. I have met some very nice families on sittercity. They do have back ground checks that you are able to get before someone comes to your house if you want to. Another thing some parents do is talk to me on the phone first then meet. I have even had some parents meet me in a public place like chuck E. Cheese. Another thing is when you talk to them on the phone or email them you could ask them for references that you could get before they come to your house. I think the big thing is to make sure they are a good fit for your family. That they have the skills that you desire. Such as, first aid, CPR, prior experiences etc. Also how do they interact with your children? Good luck in your search. I'm in Chelmsford if your close by let me know, like I said I'm a sitter. : )