I too, recently put some money into SteemPower (about $200AUD) - I checked, and much to my own horror, I have 6.7% 'self votes' for my posts. You're in the top five for people I've voted for, though! :)
I'm lower than the 'pay-for-vote' bots, (as you know from the various posts I've done on the topic) but I'd rather this number get closer to zero in my long term Steem-life.
Thank you for sharing this tool. I didn't know it existed.