What do you guys think about this?
I'm not sure what to think about this. Consensual sex between two adults but...
http://www.telegraph.co.uk/news/worldnews/australiaandthepacific/australia/10958728/Australian-judge-says-incest-may-no-longer-be-a-taboo.html
= new reply since forum marked as read
So I doubt there's any danger of it taking off as a "trend".
If two people are consenting adults and they're not having kids.... who exactly is served by putting them in jail. 
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