The stats will be more and more interesting as we get more and more users entering their flights: something I was keen on when we originally designed the upgrade form was to be able to enter more data than simply upgraded/not upgraded.

There is definitively bias on fare code, routes, etc. reported, as these are directly tied to the reporters. But there is no bias on equipment, size of upgrade lists, whether the cabin left with premium seats empty, whether ToD was offered and at which price, etc.

If all fields were always populated, you could draw some interesting conclusions even if only people who never clear were entering their stats.

My longer term goal is not to simply tell you that SFO-LAX has 10% CPU chance for a 1K. Instead, you should tell DidItClear: I'm leaving Sunday 10am from SFO to LAX, and it should be able to pull up all the stats entered for this route and day of week, compare them to the current published timetable, and give you some interesting facts. Given these, you may decide that you might have actually more chance if you SDC to the 2pm flight.

Now, of course, it is tedious to enter all of that information, but I'm trying to improve the experience (ideas welcome!). There are already a few users who take the time to populate most of the optional fields and even enter useful info in the notes section. Big thanks to you! ^