@TimCliff, does voting for witnesses cost me any SP? For the first time about a day ago, I voted for 30 witnesses for Steemit and now I am reading what you are writing in this comment about the calculation of the SP for witness votes and I am not sure if that means that SP is taken out of my Steemit wallet to pay for witnesses or not. I would assume or hope not but better safe than sorry is my philosophy like @Stefan.Molyneux.