Multiple people here seem to be confused by this project, drawing conclusions about Slack itself from its functionality and performance, or in one case trying to reason about its privacy policy based on the one from Slack.com. Despite leaning heavily on Slack's name, this is not an official project: it is some random designer who threw together a website that exposes people to Slack's product for a purpose (public chats) which Slack currently does not support: both implicitly in the way they set up their features and pricing, and explicitly when asked, such as for the article that came out about them in The Next Web today.<p>> I asked the company how it felt about these communities popping up even though it’s not exactly sanctioned and a press relations person told me that “it’s great that people are putting Slack to good use” but unfortunately “these communities are not something we have the capacity to support given the growth in our existing business.”<p><a href="http://thenextweb.com/insider/2015/03/24/slack-is-quietly-unintentionally-killing-irc/" rel="nofollow">http://thenextweb.com/insider/2015/03/24/slack-is-quietly-un...</a><p>I would say "using other people's names in confusing ways that border on impersonation should maybe be illegal", but of course it is: Slack is definitely popular enough in this space to deserve implicit trademark status. (And, before someone invokes the standard whine of "you can't own a word like Slack", trademarks are <i>not</i> about "owning words": they are about protecting people—the people who see the word, not the people who use the word—from being deceived, either on purpose or on accident, by someone using a name within the same highly-restricted context in a way that is confusing.)<p>(edit: I am glad to see benjamincburns also noted this in his comment elsewhere on this post. I noticed his comment after I had written my comment, and I figured I provide some useful detail on this not even being a sanctioned use, so I decided to leave my additional comment. He is also soon a great service now of replying to some of the people to clear up confusion.)