No, it's not a breakdown of what Americans don't know how to spell. It's someone playing with Google auto-complete.
Google could actually do this study. They have a lot of good information at their disposal. What words do people misspell the most often? Why?
But no. This nonsense instead. Which -- even though they say it's not scientific -- people will look at and try to draw conclusions from, which will shade ever so slightly how they view the world.