My post about communick on @fediverse was unfeatured and I got a 3-day ban for "advertisements".
The post was well received and had 100+ upvotes. I've written it after someone found a comment of mine and said more people could be interested.
I did talk about communick a lot on that community, but my participation was far from spammy. I also subscribed to plenty of other communities and kept any communick-related comments to the "right" place.