Demonstrating the broad appeal of Slack - my dad's medical practice has started using it. The current software ecosystem for collaboration tools in medicine is horribly bad and this can actually have tragic consequences. Slack would be wise to take a closer look at this market and see how they can optimize for the needs and requirements of physicians and nurses. Healthcare spending will only increase in the years to come and if they can demonstrate positive patient outcomes and get a few hospital CTOs on board this vertical could explode for them.