Hey! Here’s a link: https://busy.org/@incinboost/incinboost-a-one-time-fee-for-an-infinite-basic-income
Poll rebalance is when we need to add sp to increase the total amount of shares we have. Unfortunately requires a lot of manual work to go in and switch the % upvote for every person. Sending steem does get you more shares and you can also be sponsored the share!