I think you'll be fine, and I wouldn't worry too much about it, but technically, it's against the rules. (As a thought experiment, suppose I knew what apartment building you lived in, and I actively hustled up potential tenants, maybe I even posted ads. I'd send 'em over to you, and you and I could split the fee. At this point, I am acting exactly the way a licensed agent would act, and the whole reason for having the license would vanish.)