I would like to talk about using LINE, AudioMemos and audacity to help students with pronunciation. The language skill here is listening and speaking. They sometimes contact me on LINE to ask me about grammatical questions (writing)

Just want to mention that maybe we need to be careful with how we encourage out of classroom communication with students. My school has explicitly said we should NOT become facebook friends with students for example. I do use line with some of my classes but it's always as a group and with the JTE involved. I personally think that it is encouraging and helpful to students but some schools might not like the idea of teachers and students messaging each other freely. Just something to keep in mind.

Also, I think creating a separate line account or email address to use with students that your other teachers can access is a good way to alleviate questions about appropriateness.

that is interesting. Most people do not use how to use emails where I live. I totally agree with the LINE separate thing, I do not have a separate LINE account since that would require another phone. I have an English club group in LINE