Google!

I used to help people anonymously via an association called "S.O.S friendship". People would call you anonymously to talk about their problems. The problem was that I didn't have time to sit in front of my phone for 4 hours a week anymore, so I stopped doing that and looked for an alternative.

There are may advantages to 7CoT over S.O.S friendship:
-It's worldwide, and in all sorts of languages.
-People don't have to "talk", chat helps structure ideas and sidestep the fear of "talking".
-2 hours a week is the minimum, and it can be whenever you want, even late night.
-You can talk to people via the app on your phone, while you're not home.
-Diversity!