Yes, the even/odd question splits people up so that I can have half the people answer the first question in an open-ended format and the second in the "closer to A or B" format, and vice versa for the other half. I thought about anchoring effects here as well, but I couldn't come up with any other easy way to split people up. Ideally, having Google Docs do the random split itself would be ideal, but it doesn't seem to have that capability.

If anyone knows another host for such polls that does allow randomization, please let me know.