GUEST leeneia, you may be missing the point. The claim that Molly was really a 17th-18th Century "tart" was intended to promote Dublin as a tourist destination in 1988. In other words, it's supposed to be a *good* thing ! Irish TV even held a press conference to spread the word. This website will tell you all about it.

http://homepage.eircom.net/~seanjmurphy/irhismys/molly.htm