An experiment... for analytics purposes... to see how exactly the same content fares just under a different author name.... even when posted at the exact same time.
This is the last one as I have enough of a data set, for comparative purposes and an interesting post.
I think you have some accounts auto voting for you. Be sure to include that in any analysis.
Yup, that's part of it... bots need to be more intelligent because this experiment highlights how they can currently be abused.