Not a product, nor a company. Frequently @slack on other platforms as well.
It is proven! I am mattslack on Keybase: https://keybase.io/mattslack/sigchain#69cddef3557c094577a07f2410d2f8a7f6887cbe689215f249ceb0965a98e45c0f
Server run by the main developers of the project It is not focused on any particular niche interest - everyone is welcome as long as you follow our code of conduct!