Are people learning how to game @booster now? It's always been profitable for me until today, when I sent a 9SBD transfer for an upvote worth around $7. It was way higher when I checked the ROI first. Wonder if there's now a means of working out exactly when the votes are coming and then transfer max SBD just before it, getting maximum returns.
I've used booster a lot but not had this happen before.
I think it is mostly due to the popularity of better ROI earlier. Since more people are bidding, ROI is diminishing.