Contacting another member is quite easy. As you can see in the illustration below, once you discover the profile that interests you the link in the upper left hand corner is all you need to make contact. Click there and you'll arrive at a message page where you can compose and send an initial greeting. Concerned Singles will forward your initial message. Then, any and all replies will come to you directly from that recipient, including a return address for further correspondence.
And of course, Concerned Singles will forward all initial greetings directed at your own profile.
You may not be interested in all of those interested in you. Still, it is customary within the Concerned Singles community to provide a brief, polite reply.All the best.