(3) I'm here to say that's really not true - in general terms, the viruses are essentially the same, save for where they occur.
But there's this perception that HSV-1 is not that big a deal, and HSV-2 is something that carries a stigma. One thing I found while looking around the web is the prevalence of talk regarding 'good herpes' or 'bad herpes' (well, not that any herpes is 'good,' mind you).