Being able to search in the past for a half-remembered conversation sounds great until you have idiotic, asinine corporate data retention policies that require anything beyond 90 days to be deleted anyway, for some bullshit reason like being open to litigation or whatever and that being subject to discovery.

Then that's implemented with no warning to be able to migrate important info out into a wiki or other documentation. So in the end, no better than IRC really, but I get it, not a Slack problem, but allowing that whiplash at a click of a button doesn't help. Slack seems to help paper over deep cultural problems in a way that makes it all colorful and squishy.

But as other seem to agree, it's pretty bad at keeping anything organized like you want to be as an info repo, there are tools that are geared toward that specifically. Don't crowbar one into the other.