I totally agree with that!
I'd rather read the topic once in a while again in my feed and see some fresh input on it than having it only once on the whole board.
Because the nature of discussion topics and posts is to get lost in storage.
If we are honest, we open dev.to, scroll through and maybe search for one term or click on a tag to dig deeper on a topic we just saw and see what other have to say about it.
Speaking of me, I love to see some topics again to be reminded of them. Because no one opens up the site and remembers "ahhh there was this one post about how to set up a docker environment 2 years ago, lets see if someone added a new comment".
This makes dev.to awesome :-)
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We strive for transparency and don't collect excess data.