Given the large class size in a few of my classes I understand that you may not have the opportunity to ask everything you would like in class. Coupled with the inefficiencies involved with office hours (for instance you work then, it is snowy) and the fact that many students are afraid to ask questions, we are going to try to improve communication using this form.
If you have questions you can include them. You can also mention anything that I was not clear on. I will check the forms several times a week to see what I can do to make the class more beneficial for you.
And this is much better than weekly quizzes which seemingly is the alternative. :)