There is a very good bookshop in the center of my native city. An old man cherkes (adiga) by origin who wants his native language to be preserved, always speaks Adiga to the sellers, who answer only in Russsian. He always makes a problem, every time his visit is a next row to the stuff.
What do I think about all these. You deserve my respect for your patriotic striving to propagandize Spanish.
At the same time you cannot stick your native language. We will speak Spanish only in two cases: if we like it or if we have such need. You cannot do anything with it in the first case. And in the second- can you make speaking Spanish essential on the site?
And what about the native language of Indians in South America? Should you speak it to respect their patriotic feelings?