Agreed. One powerful feature of Slack is search. The best thing about it is that it works! You can look for troubleshooting discussions (e.g. code build issue) and usually there’s a solution already. In that sense it’s also a permanent information page like Confluence, albeit less structured, but a perfect fit for info like tedious bug finding thread where people just don’t feel like writing up a well organized wiki for it.
You can search for data years back, but you don’t have to. E.g. code troubleshooting tips are only relevant for a couple months, since the code keeps changing. The other nice thing is that you can share the findings via link of a thread or single comment with your team, and they don’t have to leave Slack to be able to see them, which is definitely a smooth experience - if they are already on Slack at that moment. In terms of search experience, it probably depends on use case, but I dont think Slack’s search is apparently worse than its alternatives like Outlook, Confluence, Jira etc. - if at all.