Across the country the Indiana and Kansas fans dominate.

Facebook writes:

Over 1 million US Facebook users have liked a page for one of the 68 teams attending the tournament. By mapping out where these fans currently live we can see how regions and states will be dividing their loyalty and filling out their brackets this March. 

The dissolution of the Big East ignited endless debate about which basketball conference is the most dominant. The Big East placed the most teams into the tourney this year (8), followed by the Big Ten (7) and the Atlantic 10, Mountain West, Pac-12, and Big 12 each placing 5. Which conference will have the biggest fan base for the tournament? To answer this question, we calculate how many users have liked the team page for the teams in the tourney in each US county and display the conference with the most likes for their teams. 

There's a lot more maps in the article:

https://www.facebook.com/notes/sports-on-facebook/march-madness-fandom-on-facebook/10151473245234487

Jesus H. Christ.

What specifically are you reacting to? :)