One interesting side effect of following soccer players on Twitter is learning the languages these guys speak. Probably more than any other professional sport, professional soccer players are often playing outside of their home country, on teams that primarily don't speak their own language. There's a lot of Brazilians playing in Spain, and like Cesc Fabregas (pictured above at @cesc4official ), quite a few Spaniards playing in England, and many others just are trying to get a more global audience by tweeting in English.
As a result, these players tend to tweet in multiple languages for their multiple audiences. It's a great way to learn these languages in context, as you have translations right there in front of you.
Here in the picture you have Fabregas tweeting the same thing in Catalan (the Spanish provincial language he grew up with), Castillian Spanish (that most if not all of Spain understands and speaks) , and English (as he plays in England for Arsenal, as well having many other American fans).
If you are curious here's a (non-exhaustive) list of soccer players on Twitter.
