I have used roommate. Com for several years. It is a little more expensive then other sites but in the scheme of renting, it is not ridiculous. I have sent many messages that have gone unanswered. I assume the receiver did not want to pay to get the message. I feel like if they will not pay to receive messages one they're not very serious about finding a place to live and two if they won't pay $15 to help themselves find a place will they pay the rent repeatedly on time. I have been successful using this site. I do wish it had a cheaper annual fee that you could use instead of the shorter more expensive ones.