1. Communication with remote people is very easy. If I'm debugging one of our robots at a client's home, I can share output and code snippets easily. We also ha

1. Communication with remote people is very easy. If I'm debugging one of our robots at a client's home, I can share output and code snippets easily. We also have a channel for news that might be particularly interesting for our company, so less e-mails to be sent and read. Slack is handier for that because of page previews etc. 2. Channels, triggers from ifttt, GitHub etc. And integration with giphy is much used :-) 3. Free, we tried this and it works like we wanted 4. None experienced yet