[ddebernardy]

To name but a few reasons off the bat:

1. Twitter is selling content feeds to TV news networks. With enough bots out there your tweet may very well end up on TV.

2. It counts for SEO. I once met a guy in 2010-ish who was into casino SEO. He was running a network of ~150k FB/Twitter accounts to promote articles that quoted the oddball news outfits that quoted his clients' press releases.

3. Some people actually read what's going on on Twitter. In particular journalists and swaths of opinion leaders. See any late night show, really, for ample Twitter coverage.

4. Some people with tons of followers occasionally retweet garbage memes on Twitter, including racist videos tweeted by white supremacist UK groups that turn out to be fake.