All the vote bots are open to abuse. @randowhale isn't any worse than the others. It is actually been better since it limits the amount a person could use to upvote their own posts. There are many bid bots out there that allow a person to upvote their spam, copy/paste, plagiarism posts with $30, $50, or even $100 upvotes. @randowhale has a max of $2 SBD so probably a $2.50 - $3.00 upvote.