Sure, but, is that Keybase's problem? Keybase and Instagram are very different apps with very different target audiences, and Instagram didn't have an uptick in

Sure, but, is that Keybase's problem? Keybase and Instagram are very different apps with very different target audiences, and Instagram didn't have an uptick in unwanted messages after changing their user base via a a cryptocurrency drop. (See also jakelazaroff's subthread.) If Keybase, an app that is (or was) about encrypted messaging and replacing the PGP web of trust with something more meaningful, is assuming their spam problems look like the spam problems of Instagram, they are probably going to solve the wrong problems.