Mr. Ian analyzed tweets made on Christmas Eve that included the phrase "first tweet from [____]," with the blank being "iPad," "Kindle," "Nexus," or "Surface."
The results are presented in A.X. Ian's chart below.
As Jon Gruber of Daring Fireball points out, the analysis skews toward Twitter users, who are likely on the geeky end of the consumer spectrum (and, therefore, more likely to buy higher end iPads than, say, lower end Kindle Fires). But this skew shouldn't hammer the Google's Nexus 7 or the Surface, both of which considered to be high-end tablets.
Meanwhile, Berkeley professor Brad Delong asks a logical follow-up question: