Hey peeps, do me a favor would you? Hunt around on your University’s website for the Human Subjects office or Institutional Review Board website. Find the email contact for the IRB coordinator or, failing that, the chair. Dash them off a note and ask if posting a simple internet poll such as you see on blogs now and again would require IRB consideration? Is a matter of explicit exemption or is something that they cannot conceive of why you would be asking and of course it doesn’t require consideration.
If you get a ruling either summarize in the comments (I guess I’d prefer no explicit details as to where unless said IRB person says it is okay) or drop me an email.