Hi Lisa, I am a great believer in the "Nothing ventured, nothing gained" philosophy. Yes you will get some of that but you will also get some useful information. It shows that you care about how they feel about their learning, so be sure to ask them questions about that in the Minute Paper request. Also be SURE to summarize the results of the papers and perhaps read some of them that were especially useful. Let students know how you plan to utilize their input. All anonymous of course.
Susan Polick