I’ve skimmed through the posts you’ve directed me to, and I have one question that I’d like to confirm. If I tag my post with the names of communities, as I’ve done with this post, does that automatically cross-post what I have written to each of those communities?
I didn’t choose to post this piece of writing to OCD in the way that you have explained in your post. I simply tagged it with the OCD tag, which was common practice years ago when I was posting more actively. Would tagging my pieces with a single community name and then keywords related to the content be a better practice?
Some communities have distinctive keywords, which used in the post or the tag section will place your post in their community, but not always. I suggest you read my post about communities and you'll understand how to use it.