Re: [ANN][ICO] SONM: Supercomputer Organized by Network Mining (GRIB technology)
Why we need to join slack before the we apply for signature campaign? Is it necessary? You ask our ETH address so IMO slack ID is not necessary. And do you want our email or send us newsletters? 
I also have same question why need to join slack that condition is really tough. OP have to think about this and make it more flexible to join this campaign when they have our ETH address than it's useless.