While you have a point, again: the significantly large number of non-problem reports, along with the fairly steady percentage of no/yes as this has grown, shows the bias is mitigated. I'm very impressed with the people taking time to report no problem-- huge help in rationalizing the result set. In addition, there are some who voted No who now wish to change to Yes (and can't), which also balances things out a bit. Overall I'm confident the percentages reflect reality, or close enough. But I would also like to see follow-up data too.