Ask HN: Weird Twitterbots

I've been following my Erlang posting on twitter, and came across some odd twitter bots that just seem to post stuff from HN, but are disguised to look like people. Anyone know what's up with that? What purpose do they serve?

https://twitter.com/GandhiKathit

https://twitter.com/apalacci

https://twitter.com/BornCor