It's way past my bedtime here, and judging by the moderation I'm not able to make my point, which is simply this:
If you are going to be making sweeping statements about people, even including race and religion then you really should do your homework, or if you're doing it out of curiosity, keep the results to yourself. By presenting the data in a format that looks as though very hard work went in to its creation and by hammering home the reliability of that data you are creating the illusion of something that is scientifically solid when in fact it isn't.
I agree, I'm glad to get the chance to read about this stuff, but I think the PP's point was that if you're going to present a bunch of data in that manner, it's best to say, up front, something like, "our sample, while extensive within our service, is not necessarily representative of particular ethnic groups," and point out something akin to what slashdot says about their polls: you're insane if you intend to do anything serious with this data.
If you are going to be making sweeping statements about people, even including race and religion then you really should do your homework, or if you're doing it out of curiosity, keep the results to yourself. By presenting the data in a format that looks as though very hard work went in to its creation and by hammering home the reliability of that data you are creating the illusion of something that is scientifically solid when in fact it isn't.