as in teachers or students or both? I am aware of it. I would say that it's not a method. It's a theory about second language acquisition in adults. It's been around since the early 1970s. Like any theory it's been subject to criticism and revisions over the years. For example there are some practical difficulties in applying the theory into practice, especially once you get past the initial beginners stage of language acquisition. And some people would argue that it actually places too much emphasis on the role of the teacher to select 'appropriate' input material, and not enough focus to giving a sense of ownership to the student. But overall, it's been quite influential, so nearly all the mainstream teaching methods in English speaking countries reflect or incorporate the main parts of the theory to some extent. And it's quite likely that most students have experience of lessons that incorporate elements (or all) of this theory, but they just don't know it because... well firstly because how would a teacher explain the theory if they were teaching a group of say 20 students who speak 20 different languages ... and also it's sort of inherent in theory itself that it's not necessary to explain the theory because (according to the theory) language acquisition just sort of happens if the right circumstances exist. So, having said all that, yeah I quite like the theory but I wouldn't call myself a "follower"!

I use something like this in my own studies. You can send me a message if you want to chat about it. Good luck!

I’d like to see examples for learning Spanish please