I love them!
I think you need to be careful what kind of design, so it makes the room look interesting and has a classy look.
I have even gone one step the other way, I put a lovely white flower on my kitchen window, so I could get light in....but my neighbours really can't see in from outside.
My daughter-in-law bought Tulips, placed them all along the bottom of my granddaughters little white wardrobe! Looks amazing...Just very sweet.
I think the application can be a real winner, you just need to give it some artistic thought.
Having said that we are careful 'where' they go.
Who ever came up with the idea, I think was very creative indeed.You can also change as much as you like, so it never needs to be boring.
It's been on the Kitchen window now for 18 months! no sign of it 'trying to peal off :) and it's right over my kitchen sink, where there is always hot steam!
So for $12.00 it was a fab buy.