What you think about Esperanto Lenguage?

What you think about this fascinating idiom called Esperanto? It's a very usefull because many people in all world try to comunnicate better but many of us are no able to do it,so, for this kind of people - curious of the world - are exist this language. Is a free, simple and very faster to learn because just use 16 grammar rules.

This is a video of a presentation in this idiom of the University of Amsterdam:  
Esperanto-libroekspozicio ĉe la Universitato de Amsterdamo Intervjuo de Katalin Kovats kun la profesoroj kaj instruisto de Esperanto en la katedro Interlingvistiko kaj Esperanto