Also, if you look here https://steemit.com/steemvoter/@steemvoter/steemvoter-com-s-new-home
this seems to be the very first "payout" post, and its a month old and has over 500 votes.
The point... that around half of the "payout" post voters signed up to SV as a free service and then got converted to the one payout vote per day because they didnt opt out.
If you look at @anotherjoe 's comment on that thread, you will see that he, at least, didn't know this was happening.