I learned so much in the year after Flickr was acquired. People forget, but Flickr launched in February 2004. And a year later, the deal was done with Yahoo, and we closed it in March of 2005. It was really independent for a relatively short period of time.

In Slack, you create channels to discuss different topics. For a small group of people, those channels are relatively easy to manage and navigate.

You may be trying to drive in a particular direction that people don't necessarily understand at first. In our case, we knew the users we had in mind for this product. So in the early days, we looked at our customers, really just testers at that point, and we paid extra attention to the teams we knew should be using Slack successfully.

Stewart Butterfield Quotes