Wikispaces.com does 9M uniques and 75M pageviews a month per Google Analytics. Quantcast says 1.4M uniques, Compete says 900K. Neither trend in the right dire

Wikispaces.com does 9M uniques and 75M pageviews a month per Google Analytics. Quantcast says 1.4M uniques, Compete says 900K. Neither trend in the right direction. Alexa is comically low on pageviews and maybe 6x low on reach when we compare those stats to other sites who make their numbers public. However, Alexa tends to head in the right direction. I looked at Comscore data on us a few years ago and it was less wrong than Quantcast and Compete, but still well off the mark.