2 ms·I thought substack was a competitor to medium. Not really something that competes with Twitter.by wodenokoto 4y agoI thought substack was a competitor to medium. Not really something that competes with Twitter.kevingadd 4y agoThey are pivoting into microblogging, which competes with Twitternvrspyx 4y agoI wouldn't say it's "pivoting", but rather expanding.