One time I was doing research on some really cheap data centers in basically 3rd world countries. Just out of curiosity to see how cheap it could really get.
One of the companies had a picture of one of their "datacenters." It was something like 10 racks in a moldy unfinished basement with visible water on the floor of what I'm guessing was a residential building. Maybe they had mopped the floor for the picture?
I thought it was strange they would put that picture on their site and not some GCI or something. I guess at least you know they are not lying about being a real place?