Tattoo Dating

What exactly IS tattoo dating? And why is Google advertising it on my blog? Am I the kind of girl that seems to be in need of a tattooed soul mate? Or am I misunderstanding 'tattoo'? Perhaps we're talking tattoo as in the Edinburgh Castle type spectacular? Whatever. For the record, if I was to look for a replacement for my dearly beloved Menopause Herb, I wouldn't be looking for a tattooed replacement. You got that, Google?