Slack Is Said to Be in Funding Talks at $2 Billion-Plus Value - Bloomberg Business

Reminiscent of Twitter's early history

"The investments are a further validation for Stewart Butterfield, who co-founded Tiny Speck Inc. and raised $17 million to develop an online game called Glitch. Tiny Speck had $5 million left when in 2012 Butterfield and the founders decided to shut down the game and return cash to stakeholders. Instead, their investors encouraged them to keep the money and start a new business, which became Slack. Butterfield had previously sold photo-sharing website Flickr to Yahoo! Inc. in 2005."

Slack Is Said to Be in Funding Talks at $2 Billion-Plus Value - Bloomberg Business