Feed the data through this...http://www.fourmilab.ch/random/
Results99.5% of the 1 million values were distributed between just 38 values out of 1024 possible values. Hmmm.... does not seem to be a wide "seed" range by any means Comments / Thoughts welcome.
I did extensive research on this and essentially debunked this claim made by Arduino.
I did a Chi-squared test on about 7k data points and it passed with flying color using the revised myanalogRead() provided in that thread. The distribution is also quite uniform.