Let’s face it, clicking on a traffic exchange can often become boring and drive you away if you don’t have anything to make it interesting. Adding someone to your friends list is a simple one click operation, but Traffic Swirl doesn’t seem to have any way to make that worth doing (unless you count the Social Badge).
One thing I have started doing is adding their profile to a Bookmark in my browser. I sort them into folders, then when I have a reason to go find someone it’s easy to accomplish. See if that might add to your enjoyment online too.