I agree with the suggested rules change, if you enter more than once, only your first answer counts. Also, the system appears to lock up when a person is posting, so while sistertodd was listing the names of all the domestic airlines, I think no one else was able to post.

My second win I knew the case was American Airlines, so I was not just guessing, but the day the question asked for 1, 2, or 3, I spent a couple of minutes readinf the United partner rules on the webflyer site, then thought, "this is silly, why research the quetsion when there are only 3 possible answers and the site allows unlimited entries. I agree, allow one entry per person per day. I've won twice, so if they want to limit it to two wins per person, that's fine with me. I've already won twice more than I expected.

By the way, I really like the new travel boards, it looks like a well organized way to share travel information. I was Priority Gold on USAir for three years.