Same. There's a lot of subreddits that aren't here yet that I need and that there aren't many active forums for.
For example, I play a not uncommon instrument and I use the instrument's subreddit occasionally. It's a really good source for auditions, techniques, and resources. Unfortunately, there isn't a community here and most of the forums on that instrument are dead/closed. I could go on Facebook and join groups on there, but is that really better than Reddit
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