How would you word this sentence---Would anyone like to be interviewed for your expertise? I'm finding people to interview via online forums.
What is the exact topic you are interviewing on? Internet business? Or something else entirely? See, you have to offer something for the person you are interviewing. The headline might read: Share your experience and gain traffic to your site. In this way, you are offering something tangible in return for the interview (because, naturally, the interview should at least contain a short bio with a link back to the interviewee's Website).
I totally agree with Spirit Walker. I think it's very important that you offer something to the person you are going to interview. What expertise are you talking about? You should include more information about your interview including the topic and a description of your target interviewees.