When you post an interview in your profile, your viewers can respond to the questions you've asked by selecting from multiple choice response options. Their responses are then sent to your message inbox for you to review.
You can use your interview as you feel it would benefit you most in your search for a match. For example, if you are allergic to pets and cannot date someone who has them, you might add the following question to your personal interview as a way to pre-screen potential matches.
Q. Do you have pets?
Yes, and I would never part with them.
Yes, but I would part with them for the right match.
No, but I would like to have a pet one day.
No, and I do not want or cannot have a pet in the future.
To invite someone to take your interview, visit their profile and select "Send [their name] your interview". This way, they'll know that you'd like to receive their responses.