Spanish- Formal and Informal Language

How important is it in your language to make a distinction between formal and informal speech patterns?

Spanish
	Alejandro Octavio Aguilera (Monterrey, Mexico) “Yes this thing about “usted” and “tú” is very important. In the first place, “usted” is a way…”
	Roxana Danae Bannach (Santiago, Chile) “Well, normally you will always talk to the person with “usted” especially if you don’t know him…”
	Martha Mateos Brito (Monterrey, Mexico) “Well, “usted” I generally use it with older people, or with people for whom I have a…”
	Carlos José Bueso Más (Puerto Rico) “With “usted” and “tú,” Americans have the advantage obviously in that there is no distinction…”
	Carmen Gladys Zapata (Lima, Peru) “We generally use “usted” when there isn’t a high level of familiarity between the…”
	Roberto Salmón Rodríguez (Lima, Peru) “Well, let’s begin looking at it from a retrospective point of view, looking at if from the…”