Thanks for the advise. I'll try that. There were hardly any rewards (and now, thanks to this SOB there won't be any at all), so that's not a big deal. This freak appears to be looking for and voting down everything I post regardless of the contents (including comments to other posts). If I can keep posting and commenting without fear that this vengeful jerk votes me down to a negative reputation - that's sure worth losing a few satoshi in steem rewards.