I've been there. It's not that hard to find communities/forums/etc that are relevant. Just dropping in with a post about your new app rarely goes over well. It'

I've been there. It's not that hard to find communities/forums/etc that are relevant. Just dropping in with a post about your new app rarely goes over well. It's a much more nuanced problem than finding people, you have to engage them, ask questions and pay attention to the answers.