I wish I had been smarter sooner, but better late than never. I propose as a replacement for the NSFW tag, a different option. I took the ASCII string "Not Safe For Work" and converted it to the hexadecimal number 4e 6f 74 20 53 61 66 65 20 46 6f 72 20 57 6f 72 6b. I then divided up the rightmost 30 numbers into five groups of six numbers to create five 24 bit color bars. The remainder (72 6b) I put in the lower left hand corner. If you like, it can be used as a safety image. That way no Google algorithms get thrown out of whack.