Something I've come to appreciate on the #Fediverse is the distinct lack of scolding about searching for topics before posting about them like we did in ye olden days of #phpbb and the like*.
Obviously some of that is likely due to the nature of #Mastodon (being the largest of Fedi variants) not really being capable of a particularly robust search function until fairly recently.
Now that most Mastodon servers *do* offer much broader searches with ElasticDB and etc., we *still* overall seem to treat each other civilly with regards to such matters.
On the other hand, posts often vanish or are simply not locally present on a given server for a variety reasons, hence tools like #FediFetcher being created to compensate for such issues, so perhaps that has an impact as well.
Regardless of the cause or lack thereof, I'm glad we can post into the void and not really have to deal with "Read the board rules, search before you post or burn in a fire pit of hell!! Don't duplicate topics! Nyaaaaah!!"
If you ask me, this place is really quite magical.
* - yes, I know phpbb still exists. AOL also exists, but I wouldn't say it's a particularly relevant in comparison to the Fediverse 