The accounts would then be sold as followers, which is an attractive service to some for a variety of reasons
The accounts would then be sold as followers, which is an attractive service to some for a variety of reasons
https://firstlook.org/theintercept/2014/02/24/jtrig-manipula...
Tilting public opinion goes back to the beginning of the last century and the beginning of 'public relations' i.e. Edward Bernays http://en.wikipedia.org/wiki/Propaganda_(book).
Companies, brands and others do this as well influencing thought, it is a huge problem on Facebook as well with likes, ads, accounts.
It is a faction of marketing (public relations) and has elements of tabloid.
Twitter provides a public stream of tweets. Simply pull tweets out of that, if it doesn't contain another users name or url, etc. Distribute out to one of your bots, weighted by chattiness. Get fancy and have some sort of baysian filtering for what category bucket it falls into and give your bots interests.
I'd guess there are enough duplicate tweets. "Another crappy day at work", "looking forward to dinner tonight", "going to see my sister this weekend!", etc. That I doubt it'd be a very useful heuristic.