"Randomly selected"...did they really have an equal chance of landing any of the 300 million users on Facebook? How did they find a complete list of users to s

"Randomly selected"...did they really have an equal chance of landing any of the 300 million users on Facebook? How did they find a complete list of users to select from randomly? (For example, I can bet they excluded anyone who didn't speak English.) To survey 1% of Facebook users these days, you need to contact 3 million people. A sample of 200 could easily be completely inaccurate, and I can say with absolute certainty that it does not justify a headline like "41% of Facebook Users". They can't even know it's 0.01%. They should at least publish some other aggregate info. For example...once "randomly" selecting 200 people, did they find that half of them lived in the same country, or 3/4, or 90%? Did these people have anything else in common besides a tendency to share personal information? Couldn't the experiment be easily repeated 2 or 3 times to see if the distribution holds? (That wouldn't help much given the sample size, but it would show a lot more than they have now.)