Oh I have a special theory on this. Which is as follows - in general, people's ability to seperate or ignore the behaviour of the artist is fully related to how much they are prepared to live without their art. So, to use an obvious example, the world seems to have made its mind up on Michael Jackson - and they are not prepared to sack off listening to Billie Jean or Can You Feel it et cet, so they are just LA LA LA fingers in the ears about him. In the same way, most people are coping without having to crack out Another Rock n Roll Christmas by Gary Glitter, so he is evil and can burn and won't be getting a loving biopic made about him any time soon. So - art you cannot / will not give up - separation. Shit art - burn them. it's not a pure rule - and it may depend on the scale of the crime. I can and will listen to The Smiths, but I tend to find myself thinking about what a turnip that man is now, every single time that I do - so I think in some cases the person sort of bleeds into their art and can make you feel a bit icky.