Well just don't fall for the old "it ain't like it was in the good ol' days" view of language. There's a whole wealth of new vocabulary today, as well as new ways of structuring phrases and so on. Which goes on in all sorts of languages. When Spanish speakers can write me and say they're looking for a place to chilloutearse
for a few days, I'm not worried.
I'd be more worried about language death, however. We're losing languages in this world at a remarkable rate, rather like the species dying off in the rainforest and so on.