Stewart Butterfield quotes

About 80 percent of the photos on Flickr are public and searchable by everyone. In one sense, it's a place where people upload snapshots from the family reunion, wedding or the birth of a baby or something like that, but it's also a place where people go to show what the world looks like to them.

There are a lot of things that Slack gives you that email doesn't when you think about internal use. Switching to Slack from email for internal communication gives you a lot more transparency.

Inside a company, you can mandate that everyone use the same technology, which means you can go a little bit, I don't know, higher-fidelity than the lowest-common-denominator technology. There are a lot of things that Slack gives you that email doesn't when you think about internal use.

Inside all the computers of any large corporation is every decision that gets made. But people spend a huge amount of time trying to find the correct piece of information.

If you work at a 10,000-person company, and you're using e-mail as the primary means of communication, then you probably have access to a couple hundredths of 1 percent of all the communications happening across the company. But if you use Slack, you might have access to 10 or 20 percent.