After you decide where to stick it, take a picture of it:
http://www.flickr.com/groups/powershell

Good call... you know, this is sort of sad, but part of me doesn't want to stick it anywhere because then I can't move it. You know, once stuck, it's not going anywhere. At least without the annoying sticker residue. And I'm probably just being OCD about it. I guess that's why they'll send two stickers.