oki, i went through the posts and let me summarize the challange with twins nudes:
1. most often girls are no twins, but somewhat similar looking girls
2. if it happens that they really are twins, they are very ugly - so what's the point if they are twins or mother with brother, or nephew's sister's mother
3. in one of a houdred galleries it happens that the girls are real twins, they are good looking, but they don't show anything, so what? they should save it for face book
4. in very very rare cases there are twins who look good and they do some nasty stuff, but the galleries are deleted