We've been contemplating on hiring a baby sitter. But the thing is, we don't know anyone. Is it safe to go to agencies and hire someone who you don't know?

If you're worried you can try to Google her name with babysitter behind and hopefully you will be able to find something about her. If it's negative I'm sure there will be a lot of comments posted online. Try asking on parenting Facebook groups as well as on forums. You may get the answer you need.