I don't believe in luring people into the web of one's gallery. The thumbnails I prefer show the whole, or as good as the whole work. I understand that with the new rule this cannot be done with images with nude figures, but even then you can either use Poser's selection in post to fill the character with black, white or a colour of your fancy (probably not too close to skin) or indeed clothe the character.

There are some exceptions, artists whose work I know to be my liking. But generally speaking, I don't ever want to see a work that has an "Advisory Content" thumb or a cropped thumbnail that does not show what the work's all about.

Everyone her own opinion of course.